| 单词 | gravitational field |
| 例句 | But, as indicated above, the real importance of the singularity theorems was that they showed that the gravitational field must become so strong that quantum gravitational effects could not be ignored. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The time for someone on a star will be different from that for someone at a distance, because of the gravitational field of the star. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z What really happens during the very early or late stages of the universe, when gravitational fields are so strong that quantum effects cannot be ignored? A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Thus, in a sense, the gravitational field has negative energy. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The theory predicted that light reaching the Earth from distant stars would be bent by the gravitational field of the sun to a much greater degree than was predicted by classical Newtonian physics. Big Science 2015-07-07T00:00:00Z It was so massive, it emitted its own gravitational field. Darius the Great Is Not Okay 2018-08-28T00:00:00Z This giant was another child of Gaea—a creature of the earth so malevolent and powerful, he radiated his own gravitational field. The Son of Neptune 2011-10-04T00:00:00Z The surface was level and solid and firm, and he easily kept his balance in the strange gravitational field where everything weighed only one sixth its earth weight. Flying to the Moon: An Astronaut's Story 1976-01-01T00:00:00Z Normally, the energy of the particle is still positive, but the gravitational field inside a black hole is so strong that even a real particle can have negative energy there. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z When it gets to the point at which the virtual particle/antiparticle pair appeared together, it is scattered by the gravitational field into a particle traveling forward in time and escaping from the black hole. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z In the quantum mechanical way of looking at the gravitational field, the force between two matter particles is pictured as being carried by a particle of spin 2 called the graviton. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z My work in the 1970s focused on the black holes that can result from such stellar collapse and the intense gravitational fields around them. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Thus if light cannot escape, neither can anything else; everything is dragged back by the gravitational field. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Laleh flounced onto the couch on Dad’s other side and tucked her feet underneath her butt, disturbing the gravitational fields on the couch so Dad leaned away from me and toward her. Darius the Great Is Not Okay 2018-08-28T00:00:00Z As the star contracts, the gravitational field at its surface gets stronger and the light cones get bent inward more. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z However, what the singularity theorems really indicate is that the gravitational field becomes so strong that quantum gravitational effects become important: classical theory is no longer a good description of the universe. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z So general relativity predicts that light should be bent by gravitational fields. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The gravitational field of the star changes the paths of light rays in space-time from what they would have been had the star not been present. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z As light travels upward in the earth’s gravitational field, it loses energy, and so its frequency goes down. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The eclipse was a turning point in Einstein’s career, as well as in our understanding of how stars interact with the sun’s gravitational field. Missing the Eclipse? Read All About It. 2017-08-04T04:00:00Z For better or worse the president’s gravitational field is powerful; those who gets near him either find themselves in a tight orbit or crash landing. So, while we’re waiting . . . will Mike Pence ever be president? 2020-10-30T04:00:00Z Domingo believes that South America exists in the pull of a gravitational field that allows communication with other places, times and dimensions. Chile, the home of cosmic rock 2013-01-25T13:00:00Z Those characters caught in Cora’s gravitational field allow Perry to explore a variety of political and social issues we’re still wrestling with today. The most delightful heroine since Elizabeth Bennet 2017-06-05T04:00:00Z To escape from Earth's gravitational field, you need a rocket speed of about eight miles a second. Gravity's Engines: The Other Side of Black Holes - review 2012-12-12T07:00:00Z The episode, written by Charlotte Stoudt, doesn’t telegraph an answer; it just paints in full two talented women caught in Fosse’s gravitational field and lets them speak. Review: In ‘Fosse/Verdon,’ a Portrait of the Artist as Problematic Fave 2019-04-08T04:00:00Z Then, of course, it was a great success and helped me get out of what I call the gravitational field of English actors. Jeremy Irons Is Transported by Renzo Piano and a Dog Named Smudge 2022-01-19T05:00:00Z The telescope’s high-precision observations will allow unprecedented measurements of weak gravitational lensing—the subtle warping of light from background galaxies and clusters that is caused by the gravitational fields of intervening massive objects. Euclid Space Telescope Releases Stunning First Science Images 2023-11-08T05:00:00Z Its enormous gravitational field deflects comets and asteroids that might otherwise hit Earth, helping create a stable environment for life. Giant planets cast a deadly pall 2023-10-31T04:00:00Z The MOND-sculpted orbits of these bits of ice and rock should line up with the center of the Milky Way as the galaxy's gravitational field—again, in presumptive accordance with MOND—drags them into alignment. ‘Modified’ Gravity May Make Planet Nine Disappear 2023-10-25T04:00:00Z Albert Einstein's theory of relativity has long established that the trajectory of electromagnetic waves -- including light and terahertz electromagnetic waves -- can be deflected by gravitational fields. Photonic crystals bend light as though it were under the influence of gravity 2023-10-16T04:00:00Z Over millions of years, they argue, the orbits of some objects in the outer solar system would be dragged into alignment with the galaxy's own gravitational field. Plot thickens in hunt for ninth planet 2023-10-05T04:00:00Z According to the so-called equivalence principle, in a gravitational field all objects fall at the same rate regardless of what they’re made of. Antimatter falls down, just like ordinary matter 2023-09-27T04:00:00Z Yet an astrophysicist simulating the black hole would not get sucked into their laptop by the simulated gravitational field. What Does It ‘Feel’ Like to Be a Chatbot? 2023-09-08T04:00:00Z For example, being the smallest planet in the solar system, Mercury also has the weakest gravitational field—meaning that the planet’s pull simply can’t affect us in any significant sense. How to Survive Mercury in Retrograde 2023-08-17T04:00:00Z Rubber balls can be dropped to roll and spin around each other in a gravitational field. New black hole could help WA scientists unlock mysteries of the universe 2023-05-29T04:00:00Z When they plotted the orbits of the objects from the Planet Nine dataset against the galaxy's own gravitational field, "the alignment was striking," Mathur said. Plot thickens in hunt for ninth planet 2023-10-05T04:00:00Z You could accomplish something similar by moving one end of the wormhole near a big gravitational field—such as a black hole—while keeping the other end near a smaller gravitational force. Is Time Travel Possible? 2023-04-26T04:00:00Z Because the event likely battered Uranus’s interior, an orbiter that can detect fluctuations in the planet’s gravitational field would be able to map any internal anomalies created by the giant smashup. NASA’s Uranus Mission Is Running Out of Time 2023-03-30T04:00:00Z When he emerged from his bunker after the initial days of assault in his green fatigues, surrounded by his fellow ministers, you sensed a change in Earth’s gravitational field. Opinion | What a year of war has revealed of three leaders 2023-02-21T05:00:00Z According to general relativity, a black hole Such peculiar beasts are thought to emerge when massive stars collapse to an infinitesimal point, leaving just their gravitational fields behind. Dark energy from supermassive black holes? Physicists spar over radical idea 2023-02-26T05:00:00Z Scientists believe vast oceans lurk within, kept liquid by the jostling from Jupiter’s immense gravitational field and protected from the planet’s harsh radiation belts by thick ice sheets. At Jupiter, JUICE and Clipper Will Work Together in Hunt for Life 2023-02-16T05:00:00Z Clocks on Earth and the Moon naturally tick at different speeds, because of the differing gravitational fields of the two bodies. What Time Is It on the Moon? 2023-01-26T05:00:00Z That impulse is countered by the mantle, the mucilaginous layer above the outer core and below Earth’s crust, the immense gravitational field of which grasps the inner core and slows its spin. Earth’s Inner Core Paused, Then Reversed Its Spin. This Is Fine. 2023-01-23T05:00:00Z A black hole is the ghostly gravitational field left behind when a massive star burns out and collapses under its own gravity to an infinitesimal point. It just got harder to question the existence of black holes 2023-01-04T05:00:00Z Juno has nine different research instruments, and as the spacecraft flew past Europa, they collected data on the moon’s magnetic field, gravitational field and almost nonexistent “atmosphere” of dilute gas. Jupiter’s Ocean Moon Europa Is Ready for Its Close-up 2022-10-13T04:00:00Z Since the fields on the surface of the soup can obey quantum rules about preserving information, the gravitational fields inside the can must also preserve information. Black Holes May Hide a Mind-Bending Secret About Our Universe 2022-10-10T04:00:00Z Although the definition of the second is the same everywhere, the special theory of relativity dictates that clocks tick slower in stronger gravitational fields. What Time Is It on the Moon? 2023-01-26T05:00:00Z Using Cassini’s measurements of Saturn’s gravitational fields to model the planet’s interior structure, the researchers refined calculations for the wobble of Saturn’s spin axis and found it is no longer in sync with Neptune. Lost moon may have spawned Saturn’s rings 2022-09-14T04:00:00Z No matter what an object is made of—be it lead or sawdust—it will accelerate in the same way under a gravitational field. Strictest test yet of general relativity confirms feathers and bowling balls really do fall at the same rate 2022-09-14T04:00:00Z One wire cannot block the magnetic field of another wire any more than a massive stone floor beneath you can block the gravitational field of the Earth. College Physics for AP Courses 2015-08-12T00:00:00Z The strong gravitational field around the black hole will make his clocks run more slowly, when seen from our outside perspective. Astronomy 2016-10-13T00:00:00Z “What changed the Cartwheel’s shape was the influence of this other galaxy’s gravitational field that changed the orbits of stars in the original Cartwheel galaxy,” Dr. Rieke said. The Cartwheel Galaxy Is the Webb Telescope’s Latest Cosmic Snapshot 2022-08-04T04:00:00Z As they pass close enough to the Sun, the gravitational field of the Sun deflects the trajectory enough so the path becomes hyperbolic. Calculus, Volume 3 2016-03-30T00:00:00Z The black hole itself does not emit light, by definition, but its gravitational field energizes the nearby gas, causing atoms to slam into one another and generate tremendous heat. Take a cosmic tour inside the images captured by NASA’s Webb telescope Draw gravitational field lines between 2 masses, electric field lines between a positive and a negative charge, electric field lines between 2 positive charges and magnetic field lines around a magnet. College Physics for AP Courses 2015-08-12T00:00:00Z At these elevations, individual atoms can occasionally escape completely from the gravitational field of Earth. Astronomy 2016-10-13T00:00:00Z The picture is so incredibly detailed that it is possible to see galaxies arc and bend — an effect caused by the gravitational field of galaxies warping light, which Albert Einstein first identified. The Webb telescope restores (some of) my faith in humanity 2022-07-15T04:00:00Z In the next example, we explore one of the classic cases of a three-dimensional vector field: a gravitational field. Calculus, Volume 3 2016-03-30T00:00:00Z The light from those galaxies, magnified into visibility by the gravitational field of the cluster, originated more than 13 billion years ago. Five Things Learned From the Webb Telescope’s First Images 2022-07-13T04:00:00Z Another known cause of red shift in light is the source being in a high gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z For example, we say the Sun produces a gravitational field that controls Earth’s orbit, even though the Sun and Earth do not come directly into contact. Astronomy 2016-10-13T00:00:00Z The light from those galaxies, magnified into visibility by the gravitational field of the cluster, came from galaxies that existed more than 13 billion years ago. Webb Telescope Raises Curtain on a New, Ancient Universe 2022-07-12T04:00:00Z Figure 6.8 shows what this gravitational field looks like for a large mass at the origin. Calculus, Volume 3 2016-03-30T00:00:00Z It shows a field crowded with thousands of galaxies, some with shapes distorted by the intense gravitational field of a galaxy cluster in the foreground. Webb telescope wows with first images 2022-07-11T04:00:00Z Furthermore, the properties of uniform circular motion can be applied to the motion of massive objects in a gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z The experiment showed that the stronger gravitational field at Earth’s surface really did slow the flow of time relative to that measured by the maser in the rocket. Astronomy 2016-10-13T00:00:00Z The waves scatter not off the material of the object—which they go right through—but from the object’s gravitational field. Gravitational wave radar could probe deep space for tiny stellar objects 2022-06-23T04:00:00Z All three hikers are traveling along paths in a gravitational field. Calculus, Volume 3 2016-03-30T00:00:00Z Earthquakes result in large shifts in mass; those shifts give off gravitational effects that deform both existing gravitational fields and the ground beneath seismometers. Gravity signals could detect earthquakes at the speed of light 2022-05-11T04:00:00Z Gravitational mass is the property of an object or a system that determines the strength of the gravitational interaction with other objects, systems, or gravitational fields. College Physics for AP Courses 2015-08-12T00:00:00Z Each of these planets has a core composed of heavier materials, as demonstrated by detailed analyses of their gravitational fields. Astronomy 2016-10-13T00:00:00Z The key to the effect is that within the sphere, the gravitational field is modified from the point-source form, he explains. Gravitational wave radar could probe deep space for tiny stellar objects 2022-06-23T04:00:00Z Notice that E is a radial vector field similar to the gravitational field described in Example 6.6. Calculus, Volume 3 2016-03-30T00:00:00Z Their slightly different measurements of time were capturing minuscule changes in the gravitational field. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z A gravitational field is caused by an object with mass. College Physics for AP Courses 2015-08-12T00:00:00Z In weak gravitational fields, the predictions of general relativity agree with the predictions of Newton’s law of gravity. Astronomy 2016-10-13T00:00:00Z Prof Calmet and his colleagues say they have shown that the constituents of the star leave an imprint in the black hole's gravitational field. Scientists claim hairy black holes explain Hawking paradox 2022-03-17T04:00:00Z The difference is that this field points outward whereas the gravitational field points inward. Calculus, Volume 3 2016-03-30T00:00:00Z If several optical atomic clocks could be placed in different parts of the world, geodesists could measure ticking differences between them, and therefore differences in height and the gravitational field, he said. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z The gravitational field caused by a spherically symmetric object with mass is radial and, outside the object, varies as the inverse square of the radial distance from the center of that object. College Physics for AP Courses 2015-08-12T00:00:00Z Finally, the moon and Mars possess a much weaker gravitational field than Earth, which can subtly affect a vehicle’s operations. NASA Eyes Electric Car Tech for Future Moon Rovers 2022-02-17T05:00:00Z Normally a wavelike excitation, spinning through Higgs’s gravitational field, unless caught and entangled in a moment of viable wobble, Poem: ‘Elective Affinities: Ghazal of the Muon’ 2022-02-05T05:00:00Z Vector fields have many applications because they can be used to model real fields such as electromagnetic or gravitational fields. Calculus, Volume 3 2016-03-30T00:00:00Z The researchers found that the two wave packets were out of phase—a sign that the gravitational field in the atomic fountain wasn’t completely uniform. In a First, an ‘Atomic Fountain’ Has Measured the Curvature of Spacetime 2022-01-17T05:00:00Z The combination of these two theories is relativistic quantum mechanics, and it describes the behavior of small objects traveling at high speeds or experiencing a strong gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z Several effects had never been measured before, including how photons from one of the stars slow down and bend as they pass through the intense gravitational field of the other. Double pulsar data helps Einstein’s theory of gravity pass toughest test yet 2021-12-14T05:00:00Z By measuring these tiny shifts as Juno flies over the Great Red Spot, scientists can make precise measurements of the local gravitational field and the depth to which the massive vortex extends. Jupiter’s Great Red Spot Is Surprisingly Deep 2021-10-28T04:00:00Z In this chapter, we learn to model new kinds of integrals over fields such as magnetic fields, gravitational fields, or velocity fields. Calculus, Volume 3 2016-03-30T00:00:00Z In a perfectly uniform gravitational field, such effects would cancel out. In a First, an ‘Atomic Fountain’ Has Measured the Curvature of Spacetime 2022-01-17T05:00:00Z A gravitational field is caused by an object with mass. College Physics for AP Courses 2015-08-12T00:00:00Z With masses greater than the Sun squeezed into balls the size of a city, the stars have intense gravitational fields. Double pulsar data helps Einstein’s theory of gravity pass toughest test yet 2021-12-14T05:00:00Z The ESA probe will map Mercury’s surface and gravitational field to study its inner structure. Mercury Dazzles in New Close-up from BepiColombo Mission 2021-10-04T04:00:00Z Radial fields model certain gravitational fields and energy source fields, and rotational fields model the movement of a fluid in a vortex. Calculus, Volume 3 2016-03-30T00:00:00Z Another of its instruments will peer into the planet’s guts, mapping the varying strength of its gravitational field to visualize the layer-cake structure of the Venusian interior. NASA Just Broke the ‘Venus Curse’: Here’s What It Took 2021-08-17T04:00:00Z A gravitational field g at the location of an object with mass m causes a gravitational force of magnitude mg to be exerted on the object in the direction of the field. College Physics for AP Courses 2015-08-12T00:00:00Z The gravitational field would not simply disappear when one moved away from the wall of the shell. Star Trek ’s Warp Drive Leads to New Physics 2021-07-13T04:00:00Z The solar-powered probe is studying Jupiter’s composition, interior structure and magnetic and gravitational fields, gathering data that should help scientists better understand how Jupiter and our solar system formed and evolved. Ganymede Looks Glorious in New Images from NASA’s Juno Mission 2021-06-09T04:00:00Z We can now use what we have learned about curl to show that gravitational fields have no “spin.” Calculus, Volume 3 2016-03-30T00:00:00Z It will also carry a radio science experiment that will detect minute variation in the planet’s gravitational field, generating a picture of Venus’s innards. NASA Just Broke the ‘Venus Curse’: Here’s What It Took 2021-08-17T04:00:00Z Earth’s gravitational field, for example, is a function of the mass of Earth and the distance from its center, independent of the presence of other masses. College Physics for AP Courses 2015-08-12T00:00:00Z But Bobrick and Martire found this “truncation” of the gravitational field to be the reason why large amounts of negative energy are required to stabilize the contortion of space and time. Star Trek ’s Warp Drive Leads to New Physics 2021-07-13T04:00:00Z Another of its instruments would peer into the guts of Venus, mapping the varying strength of the planet’s gravitational field to visualize the layer-cake structure of its interior. Is NASA about to Lift the ‘Venus Curse?’ 2021-06-02T04:00:00Z Show that a gravitational field has no spin. Calculus, Volume 3 2016-03-30T00:00:00Z I would never be slender as the dawn, but I might not develop my own measurable gravitational field. Cook, eat, gym, repeat… has left me in need of major repairs 2021-02-18T05:00:00Z Figure 34.10 illustrates a thought experiment like the ones that convinced Einstein that light must fall in a gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z If the burn is successful that will slow the spaceship sufficiently for it to be captured by Mars’ gravitational field and enter orbit round it. Tensions rise as rival Mars probes approach their final destination 2021-02-07T05:00:00Z If radio astronomers could discover a pulsar in a similar orbit, its steady clock would allow them to study the behemoth’s gravitational field in fine detail. How the famed Arecibo telescope fell—and how it might rise again 2021-01-14T05:00:00Z At one time, many physicists resisted the notion of a black hole, a ghostly, self-sustaining gravitational field so intense that not even light can escape. After decades of effort, scientists are finally seeing black holes—or are they? 2021-01-07T05:00:00Z But making highly detailed measurements of the gravitational field, in order to factor them into heights captured by GPS, is no small task. The U.S. Is Getting Shorter, as Mapmakers Race to Keep Up 2020-05-22T04:00:00Z It is identical to being in a stationary elevator in a gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z Others are using tabletop experiments to monitor the gravitational fields around entangled objects—minuscule gold or diamond spheres, for example—looking for signs that gravity itself is “quantized” into discrete bits. On the Heels of a Light Beam 2020-04-23T04:00:00Z As they get closer and closer, they start to disturb one another’s gravitational fields, changing shapes as they either pass one another or merge. Galaxy Cruise, a citizen science project, seeks volunteers to help classify images of ‘galactic interactions’ 2020-03-06T05:00:00Z Dr. Sieh and his team also measured the local gravitational field around the lava beds. Hints of Phantom Crater Found Under Volcanic Plateau in Laos 2020-01-07T05:00:00Z An object closer to the ground should experience time slightly more slowly than one higher up, the thinking goes, because the lower one is closer to Earth’s gravitational field. Our favorite science news stories of the decade 2019-12-20T05:00:00Z Black holes Black holes are objects having such large gravitational fields that things can fall in, but nothing, not even light, can escape. College Physics for AP Courses 2015-08-12T00:00:00Z “Whether quantum fluctuations of gravitational fields could give rise to a heat-transfer mechanism that plays a role on cosmological scales is an interesting open question,” Zhang says. Space Heater: Scientists Find New Way to Transfer Energy Through a Vacuum 2019-12-11T05:00:00Z A black hole is the ultraintense gravitational field left behind when a sufficiently massive star collapses under its own weight to an infinitesimal point. Black hole reverberations suggest the cosmic beasts are as ‘bald’ as cue balls 2019-09-13T04:00:00Z However, observations of its atmospheric composition9 and gravitational field show that it contains a non-negligible proportion of heavier elements in the form of a central core and in the hydrogen–helium envelope. Signs that Jupiter was mixed by a giant impact 2019-08-13T04:00:00Z Its economic and military mass generate an inescapable gravitational field. Brexiteers want a leader with Trump’s swagger. That would be the ruin of Britain | Rafael Behr 2019-06-04T04:00:00Z When a black hole loses energy and, hence, rest mass, its event horizon shrinks, creating an even greater gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z His theory predicted that the sun’s gravitational field would displace the starlight by a certain amount compared to where they would be under classical theories of gravity. 100 years ago, an eclipse changed the known laws of physics and made Einstein Einstein 2019-05-28T04:00:00Z And a black hole is the ultraintense gravitational field left behind when a massive star collapses to an infinitesimal point. Theorist calculates the incalculable siren song of merging black holes 2019-05-02T04:00:00Z Genge points out that asteroids have fairly weak gravitational fields, meaning that plenty of their material can be ejected into space. NASA to Seek Iron-Spewing Volcanoes at Psyche 2019-04-25T04:00:00Z One of the effects predicted by the new theory was that light rays passing close to a massive body, such as a star, should be bent by its gravitational field. Einstein, Eddington and the 1919 eclipse 2019-04-14T04:00:00Z Figure 34.17 Gravity and quantum mechanics come into play when a black hole creates a particle-antiparticle pair from the energy in its gravitational field. College Physics for AP Courses 2015-08-12T00:00:00Z This story is also distinct from another recent proposal by Hawking, together with Malcolm Perry and Andy Strominger, that information is preserved outside a black hole through its ordinary gravitational field. The Event Horizon Telescope, the Hawking Effect and the Foundations of Physics 2019-04-11T04:00:00Z Black holes have gravitational fields so strong that even light cannot escape, so they are defined by a black, featureless sphere called an event horizon. First-ever picture of black hole revealed 2019-04-10T04:00:00Z The gravitational field of a black hole is so intense that not even light can escape the event horizon, the point of no return. A brief history of black holes as we await the big reveal from the Event Horizon Telescope 2019-04-09T04:00:00Z They suggest phonons, particlelike collective excitations responsible for transporting sound waves across a medium, might exhibit a tiny amount of mass in a gravitational field. Sound by the Pound: Surprising Discovery Hints Sonic Waves Carry Mass 2019-03-11T04:00:00Z Relativity must be used whenever an object is traveling at greater than about 1% of the speed of light or experiences a strong gravitational field such as that near the Sun. College Physics for AP Courses 2015-08-12T00:00:00Z Then comes the hard part: controlling a distant spacecraft in a complex gravitational field, and cushioning the lander so that it arrives intact. First private Moon lander heralds new lunar space race 2019-02-19T05:00:00Z The Falcon 9 rocket will thrust Beresheet into a “long and complex” Earth orbit where it will spend roughly five weeks gradually widening its orbit until close enough to enter the moon’s gravitational field. Israel's first moon mission set for liftoff from Florida Thursday 2019-02-20T05:00:00Z The second imagined a gravitational field extending through space, which the objects distort. A Different Kind of Theory of Everything 2019-02-19T05:00:00Z Mission team members repurposed the rover’s navigation gear to measure tiny variations in gravitational fields, a new study reports. NASA's Curiosity Rover Weighs a Mountain on Mars 2019-02-01T05:00:00Z What will be the approximate size of its gravitational field? College Physics for AP Courses 2015-08-12T00:00:00Z Writing in a Nature paper a few years ago, researchers took the planet’s gravitational field and its shape, and put the length of Saturn’s day at 10 hours, 32 minutes, and 44 seconds. Shaky rings help scientists measure Saturn’s days 2019-01-18T05:00:00Z In truth, black holes are a bunch of mass crunched together into a tiny volume, creating a huge gravitational field. Perspective | Five myths about space 2018-12-10T05:00:00Z The moon always shows the same face to Earth because it is close enough to become locked in position by the planet’s gravitational field. Chinese spacecraft to attempt first landing on far side of the moon 2018-12-07T05:00:00Z MPO will study the gravitational field—and through that, the planet’s unusually large iron core—and also test some subtle predictions of Albert Einstein’s general theory of relativity. All Systems Go for Second-ever Mission to Enter Mercury's Orbit 2018-10-18T04:00:00Z Theorists such as Stephen Hawking tried to divine what happens at the event horizon — the boundary between this Universe and whatever lies beyond the gravitational field. Black-hole chronicles: chasing the gravitational beast 2018-10-16T04:00:00Z MPO will study the gravitational field — and through that, the planet’s unusually large iron core — and also test some subtle predictions of Albert Einstein’s general theory of relativity. All systems go for second-ever mission to enter Mercury’s orbit 2018-10-14T04:00:00Z Those on Mars are, however, going to be living in a reduced gravitational field, will be exposed to high levels of radiation and will need to have excellent optimized oxygen extraction. Captain America on Mars 2018-08-03T04:00:00Z The first, gravitational redshift, is a reduction in energy of photons as they work to escape from the black hole’s intense gravitational field. Star’s black hole encounter puts Einstein’s theory of gravity to the test 2018-07-26T04:00:00Z This effect applies to sources of light that are in a gravitational field. Einstein theory passes black hole test 2018-07-26T04:00:00Z With a mass of 4 million times the Sun, the black hole generates the strongest gravitational field in the Milky Way. Milky Way’s black hole provides long-sought test of Einstein’s general relativity 2018-07-25T04:00:00Z Some of it was likely lost to space, due to Mars’s diminutive gravitational field, but a significant fraction of the planet’s aqueous inventory never really left, instead just freezing belowground. Deep Within Mars, Liquid Water Offers Hope for Life 2018-07-25T04:00:00Z Even the physical shape of our cells changes in different gravitational fields. Captain America on Mars 2018-08-03T04:00:00Z Tests involving Sgr A* moves into the realm of extreme gravitational fields. Star’s black hole encounter puts Einstein’s theory of gravity to the test 2018-07-26T04:00:00Z All bodies in a given gravitational field are thought to fall with the same acceleration. General relativity verified by a triple-star system 2018-07-03T04:00:00Z This is a key principle of physics known as “universal free fall”, stating that all objects accelerate identically in the same gravitational field. Triple-Star Test Shows Einstein Was Right, Again 2018-07-05T04:00:00Z The only tangible evidence that these processes occur at all is the mottled pattern of matter in the very early universe—thought to be caused, in part, by quantum fluctuations of the gravitational field. What Is Spacetime? 2018-05-24T04:00:00Z GD-1 and other stellar streams in the halo are thought to be the dismembered remains of globular clusters or dwarf galaxies disrupted by passing through the Milky Way's gravitational field. The Milky Way, Revealed as Never Before 2018-04-25T04:00:00Z Gravitational wave observations let us test general relativity in situations where a gravitational field is strong and highly dynamical. Stephen Hawking's final interview 2018-03-26T04:00:00Z A black hole is the gravitational field that remains when a star collapses under its own gravity to an infinitesimal point. Hawking’s final quest: saving quantum theory from black holes 2018-03-20T04:00:00Z In a binary star system, however, there are stronger gravitational fields at play because of the two stars orbiting each other. Interstellar visitor ’Oumuamua probably came from a two-star system 2018-03-19T04:00:00Z Matter and energy curve the fabric of spacetime, resulting in gravitational fields, according to Einstein's theory of general relativity. Black Hole Pretenders Could Really Be Bizarre Quantum Stars 2018-03-16T04:00:00Z Scientifically, Hawking’s name will forever be tied to black holes, the ultraintense gravitational fields left behind when massive stars collapse under their own gravity into infinitesimal points. Stephen Hawking, who shined a light on black holes, dies at age 76 2018-03-14T04:00:00Z To see beneath Jupiter’s veil of clouds and study its winds, the Juno team precisely measured the planet’s gravitational field. Juno Peers Deep into Jupiter's Abyss to Reveal Weird Winds 2018-03-07T05:00:00Z One of the reports in Nature reveals that Jupiter’s gravitational field is asymmetric, meaning there’s some kind of mass imbalance between its north and south hemisphere. New Photo Shows Huge Cyclone Horde on Jupiter 2018-03-07T05:00:00Z Juno’s data showed a small but significant asymmetry between the gravitational field of Jupiter’s northern and southern hemispheres, driven by the immense jet streams. NASA's Juno spacecraft strips Jupiter down to its underwear 2018-03-07T05:00:00Z Iess and colleagues’ most stunning finding is that there is a component of Jupiter’s gravitational field that does not show north–south symmetry — a peculiar observation for such a fast-rotating gas-giant planet. A deeper look at Jupiter 2018-03-06T05:00:00Z In these data, Juno’s scientists discovered an asymmetry in Jupiter’s north-south gravitational field that reflected shifting masses driven by rising winds from 3000 kilometers deep within the planet. Jupiter’s chaotic storms have roots deep beneath its surface 2018-03-07T05:00:00Z The Cassini orbiter, which ended its 13-year tour of the Saturn system last year by burning up in the planet’s atmosphere, also beamed back telemetry measuring that planet’s gravitational field. Juno Peers Deep into Jupiter's Abyss to Reveal Weird Winds 2018-03-07T05:00:00Z If that were the case, the gravitational field would be more or less symmetric. NASA’s Juno spacecraft finds deep winds and patterned cyclones on Jupiter 2018-03-07T05:00:00Z Juno’s data showed a small but significant asymmetry between the gravitational field of Jupiter’s northern and southern hemispheres, driven by the immense jet streams. NASA's Juno spacecraft strips Jupiter down to its underwear 2018-03-07T05:00:00Z Melt into a process called "spaghettification" as your being is stretched into a thousand threads of light by an extreme gravitational field. Black holes collide at Sundance, courtesy of VR filmmaker Eliza McNitt 2018-01-24T05:00:00Z The tiny changes in Earth's gravitational field, created when the ground shifts, arrive at seismic-monitoring stations well before seismic waves. Gravity signals could speedily warn of big quakes and save lives 2017-11-29T05:00:00Z To calculate the Hubble flow velocity of the group, we correct its measured recessional velocity by the peculiar velocity caused by the local gravitational field. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z And since the winds are different in the northern and southern hemispheres, it explains why the gravitational fields are different for each half of the planet. NASA’s Juno spacecraft finds deep winds and patterned cyclones on Jupiter 2018-03-07T05:00:00Z Because black holes are the gravitational fields left behind when very massive stars collapse to infinitesimal points, they contain no matter that might radiate light when an isolated pair of them merges. Merging neutron stars generate gravitational waves and a celestial light show 2017-10-16T04:00:00Z Scientists will also explore Jupiter’s Trojan asteroids, which consist of two giant asteroid clusters caught in the gaseous planet’s gravitational field. Cassini Is Gone. Here Are the Next Space Missions to Watch Out For. 2017-09-15T04:00:00Z However, the idea of measuring quantum superpositions of the gravitational field, as Richard Feynman described, is hardly new. Quantum gravity: Quantum effects in the gravitational field : Nature : Nature Research 2017-09-05T04:00:00Z One question Dr Pan and his colleagues particularly want to answer with their next experiments is whether entanglement is affected by a changing gravitational field. The first quantum-cryptographic satellite network will be Chinese 2017-08-31T04:00:00Z Scientists mapped Jupiter’s global gravitational field and then used that information to model the interior of the planet. NASA’s Juno spacecraft finds deep winds and patterned cyclones on Jupiter 2018-03-07T05:00:00Z Technically, Apollo 8 did not reach a sufficiently high velocity to break free of Earth's gravitational field, although its crew members were the first humans to leave the planet's orbit. Readers Respond to the May 2017 Issue 2017-09-01T04:00:00Z Until 29 May 1919, Einstein was an unheard-of physicist whose theory of relativity predicted that an object’s gravitational field would produce a slight warp in the path of oncoming light. Three times scientists learned something from solar eclipses—and three times they were tricked 2017-08-17T04:00:00Z It was during that eclipse that British astronomer Arthur Eddington ascertained that the light rays from distant stars had been wrenched off their paths by the gravitational field of the sun. The eclipse that revealed the universe 2017-08-04T04:00:00Z It was during that eclipse that the British astronomer Arthur Eddington ascertained that the light rays from distant stars had been wrenched off their paths by the gravitational field of the sun. The Eclipse That Revealed the Universe 2017-07-31T04:00:00Z Very rarely, however, one might pass in front of a far-distant background star, creating a detectable blip of light as the planet’s gravitational field acts as a magnifying lens. Wandering in the Void, Billions of Rogue Planets Without a Home 2017-07-24T04:00:00Z According to general relativity, the rate at which a clock ticks changes with the strength of the gravitational field in which it sits — an effect called gravitational time dilation. Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z That might actually sound like quite a lot, until you compare it to the total kinetic and potential energy of the Earth in the Sun's gravitational field, which is roughly 1036 joules. Fun with Gravitational Waves 2017-06-25T04:00:00Z Approach a black hole and, aside from ultimately being torn limb from limb by the steeply climbing gravitational field, you won’t notice much changing. Black Holes, Cosmic Collisions and the Rippling of Spacetime 2017-06-12T04:00:00Z Seen from the space station, the light is fainter when the beam points away, but remains visible because the star’s gravitational field diverts some of the light back this way. Neutron stars set to open their heavy hearts 2017-05-30T04:00:00Z Rather, he reflected each of them, by turns, as his real but insecure talent veered back and forth, and this way and that, in their stronger gravitational fields. Frédéric Bazille’s Short Career, Reconsidered 2017-04-10T04:00:00Z All we need is to witness quantum behaviour in the gravitational field. Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z In the sun, the extreme gravitational field does much of the work. A Dream of Clean Energy at a Very High Price 2017-03-27T04:00:00Z But launching one from the moon, even setting aside issues of aiming, would still require escaping the satellite’s gravitational field, a task that requires the power and thrust contained in a huge rocket. Brianna Wu claims companies could destroy cities by dropping rocks from Moon 2017-02-28T05:00:00Z Now, they are so close to each other that their gravitational fields interact, nudging one another in ways that enabled the team to estimate each planet's mass. These seven alien worlds could help explain how planets form 2017-02-21T05:00:00Z Satellite maps made using Earth’s gravitational field clearly show that Zealandia is a coherent geographical feature stretching from near Australia’s northeastern coast well past the islands of New Zealand, Mortimer says. Geologists spy an eighth continent: Zealandia 2017-02-15T05:00:00Z The effect of the gravitational field on the ticking rates would be different on the two paths; the clock on the higher path would be faster than that on the lower path. Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z The gravitational field around a rotating black hole is different from a nonrotating one and would allow a visible TDE to occur. The universe’s brightest supernova may be something much more exciting: a spinning, star-eating black hole 2016-12-12T05:00:00Z Einstein fuses space and time into space-time, then treats Newton's space as nothing more than the gravitational field itself. Theoretical physics: Windows on the weird : Nature : Nature Research 2016-10-04T04:00:00Z By looking at the velocities of stars, which depend on the gravitational field, Gaia will be able to test which theory is right. Milky Way mapper: 6 ways the Gaia spacecraft will change astronomy 2016-09-08T04:00:00Z LIGO, Weiss’s brainchild, proved beyond a reasonable doubt the existence of black holes, the intense gravitational fields left by stars that collapse to infinitesimal points. Meet the college dropout who invented the gravitational wave detector 2016-08-04T04:00:00Z The first mass is set in a superposition of two locations and, through gravitational interaction, generates Schrödinger-cat states on the gravitational field. Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z Slight discrepancies in Juno’s radio signals will reveal minute variations in Jupiter’s gravitational field. Now Orbiting Jupiter, NASA’s Juno Spacecraft Is Poised for ‘Tantalizing’ Data 2016-07-05T04:00:00Z Juno’s instruments are designed to precisely measure the magnetic and gravitational fields of Jupiter and the glow of microwaves emanating from within. Juno Enters Jupiter’s Orbit, Capping 5-Year Voyage 2016-07-05T04:00:00Z Juno will be measuring the planet’s magnetic field and gravitational field to determine if a dense core lies underneath all of Jupiter’s circulating gases and liquids. NASA’s Juno spacecraft will soon reach Jupiter and start unlocking the planet’s secrets 2016-06-30T04:00:00Z Witness the gravitational field exerted by the ship, which can suck buses, cars, and bridges out of a city and whoosh them upward. “Independence Day”: Peace No More 2016-06-27T04:00:00Z Such tests need not assume any particular theory of quantum gravity or manipulate the gravitational field itself in a quantum way. Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z You’d need something really powerful, like the gravitational field of a black hole, to move backwards. The science behind the time travel in Quantum Break 2016-04-04T04:00:00Z Juno will stay there for the next 20 months, studying Jupiter's atmosphere, magnetic field, and gravitational field. All the space missions you should be hyped for this year 2016-02-28T05:00:00Z Trump has distorted the race's gravitational field, reorienting the other candidates based on their proximity to his anger and inexperience. John Kasich Is the New Joe Biden 2016-02-23T05:00:00Z The theory of general relativity showed that masses warp space and that in a gravitational field time slows down. There’s no space for today’s young Einsteins | Philip Ball 2016-02-12T05:00:00Z It states that the strength of a celestial object’s gravitational field is determined by the density of matter it contains: the higher the density, the stronger the gravity. What is a black hole? 2016-02-01T05:00:00Z Doing so would generate a gravitational field sufficient to change the polarity of the Earth’s spin. Physicists Say Cinderella's Glass Heels Would Have Shattered 2015-12-23T05:00:00Z “When both parents are gone, some of the gravitational field weakens,” says William Doherty, a professor of family social science at the University of Minnesota. The First Christmas Without Mom and Dad 2015-12-09T05:00:00Z The otherwise innocuous main sequence K star, and its surrounding planets, soon bloomed into a bright ring boosted by many orders of magnitude by the lensing of the Sun's gravitational field. Beyond 550 astronomical units : Nature : Nature Publishing Group 2015-12-01T05:00:00Z One of its mind-bending predictions is that time will pass more slowly in a gravitational field. Satellite launch accident provides unexpected test of Einstein’s theory 2015-11-25T05:00:00Z In December 1915, he received a telegram from Karl Schwarzschild, a German astrophysicist serving at the front in the war, who had solved Einstein’s equation to describe the gravitational field around a solitary star. A Century Ago, Einstein’s Theory of Relativity Changed Everything 2015-11-24T05:00:00Z Unfortunately, that gravitational field would also attract nearby asteroids that would pummel Superman’s adopted planet into extinction. Physicists Say Cinderella's Glass Heels Would Have Shattered 2015-12-23T05:00:00Z “Astronomers began to detect ultra-energetic, incredibly dense objects that could only be understood in terms of their gravitational fields,” said Ferreira. Will this European satellite confirm Einstein’s last unproven idea? 2015-11-21T05:00:00Z So watches run slightly faster on the top story of a building than at street level because they are farther from the center of the earth, in a weaker gravitational field. Your Thursday Briefing: Paris Attacks, Brussels Raids, Washington Vote 2015-11-19T05:00:00Z There is reason to believe that gravity behaves subtly differently in extremely strong gravitational fields such as those found close to black holes. Satellite launch accident provides unexpected test of Einstein’s theory 2015-11-25T05:00:00Z One consequence, Einstein quickly realized, was that even light beams would bend downward and time would slow in a gravitational field. A Century Ago, Einstein’s Theory of Relativity Changed Everything 2015-11-24T05:00:00Z Furthermore, the multiple equivalent shapes of space are described by different configurations of the gravitational field. How Einstein Revealed the Universe's Strange "Nonlocality" 2015-11-11T05:00:00Z Navigating while close to the comet will be difficult because the body’s gravitational field is uneven, but spacecraft-operations manager Sylvain Lodiot hopes that the orbiter will transmit until the very end. Historic Rosetta mission to end with crash into comet 2015-11-03T05:00:00Z But Ms. Vanderpool found herself unexpectedly drawn to the gravitational field of Mrs. Clinton. Iowa Democrats Praise Hillary Clinton After Debate 2015-10-14T04:00:00Z The remaining elliptical orbits of Galileo 5 and 6 mean that their onboard clocks will continuously sweep through weakening and strengthening parts of Earth’s gravitational field as they orbit to and fro. Satellite launch accident provides unexpected test of Einstein’s theory 2015-11-25T05:00:00Z Rather than rely on more studies of Enceladus’s gravitational field, researchers relied upon seven years of images of Enceladus’s surface to measure the moon’s libration—how it wobbles as it orbits and rotates around Saturn. Cassini Confirms a Global Ocean on Saturn's Moon Enceladus 2015-09-16T04:00:00Z As a consequence, while Enceladus moves through its slightly elliptical orbit, Saturn's gravitational field rocks the moon back and forth - or 'librates' it by tiny amounts. Philae's Real-Time Descent and Enceladus's Global Ocean [Video] 2015-09-16T04:00:00Z Their remaining matter gets squeezed into a tiny area, which then leads to the creation of an immensely powerful gravitational field. Stephen Hawking Offers New Theory on How Information Might Escape Black Holes 2015-08-25T04:00:00Z But on those occasions when the planet is passing closest to Swift-Tuttle's river of dust, Jupiter's powerful gravitational field can still slightly perturb the comet particles, just enough to nudge them closer to the Earth. Perseid Meteor Shower Set to Peak on Wednesday and Thursday 2015-08-11T04:00:00Z The more massive an object, the more severely it warps the fabric of spacetime and the stronger its gravitational field. Bumpy Black Hole X-Rays May Push the Limits of Einstein's Relativity 2015-08-06T04:00:00Z As to the cause of the internal heating that drives Io’s volcanoes, scientists realised it is caused by the tides produced by Jupiter’s powerful gravitational field. Search for life switches to remote outer reaches of space 2015-07-18T04:00:00Z Jupiter’s moon Io is constantly squeezed and flexed by the immense gravitational tug of its host planet—an occupational hazard of orbiting a gas giant with such an intense gravitational field. Is It Snowing on Pluto? 2015-07-15T04:00:00Z The twin system creates an imbalanced and shifting gravitational field, which sends the tiny outer moons spinning chaotically, the measurements from the Hubble space telescope showed. Pluto's moons tumble in orbit, Hubble measurements reveal 2015-06-03T04:00:00Z Sometimes the object of interest in interplanetary space is so puny that its gravitational field is barely enough to keep a spacecraft in place. Crazy, Wonderful Spacecraft Orbits 2015-05-26T04:00:00Z The thaw is happening so fast it's even affecting the earth's gravitational field. Sudden Loss of Ice Discovered in Antarctica 2015-05-21T04:00:00Z The vapor Cassini encountered while diving through the plumes was salty, like seawater, and the spacecraft measured small variations in Enceladus’s gravitational field suggestive of an ocean lying directly atop the moon’s rocky core. First Active Hydrothermal System Found beyond Earth 2015-03-11T04:00:00Z The time delays between images depend not only on the different paths taken by the light rays, but also on the gravitational fields that the rays encounter along each path. Supernova 'kaleidoscope' seen for first time 2015-03-04T05:00:00Z The longer the path length or the stronger the gravitational field the light ray goes through, the longer the delay. Astronomers Watch a Supernova and See Reruns 2015-03-05T05:00:00Z But zoom in, and the gravitational field of our interplanetary space is a complicated, undulating, and dynamic landscape. Crazy, Wonderful Spacecraft Orbits 2015-05-26T04:00:00Z In Nolan’s film, love truly conquers all—even the deadly gravitational field of a supermassive black hole and the yawning gulfs between the stars. What “Interstellar” gets wrong about interstellar travel 2014-11-13T05:00:00Z In #Interstellar: And in the real universe, strong gravitational fields measurably slow passage of time relative to others. Neil deGrasse Tyson Fact-Checked 'Interstellar' 2014-11-10T05:00:00Z Novae happen when an exotic, compact star called a white dwarf strips the matter from a nearby companion star with its intense gravitational field. Exploding Stellar Fireball Caught On Camera For The First Time 2014-10-27T04:00:00Z But Einsteinian space-time, in my understanding, shows that time is an illusion created by gravitational fields and is relative without fixed metric. In 'Cosmigraphics,' Our Changing Pictures of Space Through Time 2014-10-13T04:00:00Z GRAIL’s twin spacecraft measured changes in the Moon’s gravitational field caused by variations in the density and topography of the crust below. Moon's largest plain is not an impact crater 2014-09-30T04:00:00Z Nasa’s Grail mission used two identical orbiters to create a detailed map of the moon’s gravitational field. Rift valleys rewrite moon’s fiery history 2014-10-01T04:00:00Z Rosetta is currently in orbit just under 30 kilometres from the comet’s surface, caught within its gravitational field. Where to land on a comet? : Nature News Blog 2014-09-11T04:00:00Z A dark star, in theory, is a sun so dense that its gravitational field overpowers light itself, sucking in every ray that attempts to escape its surface. Can an Independent Scotland, Free of London's Dominance, Survive? 2014-09-11T04:00:00Z Huybers added that melting ice sheets may also change the earth’s gravitational field, affecting where and how much the sea level will rise. Reshaping the Earth 2014-09-02T04:00:00Z Understanding the comet's gravitational field is essential to placing the lander on the surface safely, Lowry says. Duck-shaped comet could make Rosetta landing more difficult 2014-07-16T04:00:00Z If nothing else, Susskind argued, this growth means that complexity behaves much like a gravitational field. Theoretical physics: Complexity on the horizon 2014-05-27T04:00:00Z In that state, atoms are particularly sensitive to gravitational fields. With Quantum Devices, UK Army Hopes to Overcome GPS Vulnerabilities - Digits - WSJ 2014-05-16T04:00:00Z Both studies used gravitational lensing, a technique that weighs clusters by measuring how much their gravitational fields distort light that passes through them. Missing galaxy mass found 2014-02-19T18:50:18.631Z In other words, an ore deposit is probably not anywhere near large enough to distort a gravitational field. European Journalists Blame "Anti-Gravity" Spot On Magic, Not Physics 2013-11-19T08:13:00Z The Gravity Field and Steady-State Ocean Circulation Explorer was launched in March 2009, to study changes in sea level, ocean circulation and the planet's gravitational field. VIDEO: One-tonne satellite falling to Earth 2013-11-09T09:01:27Z The ball’s gravitational field should be able to interfere with itself in a quantum superposition, just as the photon’s electromagnetic field does. Physicists Eye Quantum-Gravity Interface 2013-11-05T21:15:00.387Z They also describe the gravitational field in term of curvature of spacetime and predict the existence of black holes. Black Holes May Have 'Hair' 2013-10-21T19:15:00.377Z That’s because that radition, in the form of X-rays, gamma rays, radio waves, is emitted when large objects – like giant gas clouds or stars – are brought into the black hole’s gravitational field. The Milky Way's Supermassive Black Hole Erupted Two Million Years Ago 2013-09-25T06:07:00Z As ice sheets melt, the gravitational field weakens and alters the sea level. What Big Questions Remain about Sea Level Rise? 2013-09-18T22:15:00.910Z As they travel 285 miles above the Earth, the satellites respond to bumps in the Earth's gravitational field by going faster or slower. Satellites Show Shrinking Aquifers in Drought-Stricken Areas 2013-06-17T17:15:00.280Z The more massive or energetic the object involved and, thus, the larger its gravitational field, the more quickly “gravitational decoherence” would happen. Physicists Eye Quantum-Gravity Interface 2013-11-05T21:15:00.387Z As Proxima passes in front of the two background stars, its gravitational field will bend and magnify the distant stars' light, acting like a lens. Hunt For Closest Exoplanet Gets Boost From Rare Stellar Alignment 2013-06-07T20:15:00.677Z According to Einstein’s general theory of relativity, clocks in high gravitational fields run slow, as a result of the warping of space-time. Magnetar Found at Giant Black Hole 2013-05-15T14:15:00.367Z This neutralises the effect on the beams of the planet’s gravitational field. Atomic interferometry: The function of waves 2013-05-09T15:00:31Z Even so, Forgan says if the moon’s orbit is elliptical, then the planet’s gravitational field will produce a very strong tidal force, which heats the moon. Earth-Like Exo-Moons May Lurk Well Beyond Planetary Habitable Zones, Say Astronomers 2013-04-30T08:59:55Z After spending time on Mars' much weaker gravitational field, it would be almost impossible to readjust back to Earth's much stronger gravity, says Landsorp. Applicants wanted: One-way ticket to Mars 2013-04-17T00:12:43Z This is an object that is so massive and dense that not even light can flee its gravitational field. Table-top astrophysics: How to build a multiverse 2013-03-14T16:06:58Z Analyses of Earth’s gravitational field reveal several broad areas where sea-floor crust is much thicker than normal — at least 25 to 30 kilometers thick, rather than the normal 5 to 10 kilometers. Long-Lost Continent Found under the Indian Ocean 2013-02-25T16:15:14.523Z A number of places in the Indian Ocean, such as Madagascar, Mauritius and the Seychelles, Maldives, and Lakshadweep islands, are known to display a slightly stronger gravitational field than expected. Lost Land Beneath the Waves 2013-02-24T18:00:00Z As with any planet or satellite the Moon’s gravitational field is not perfectly symmetrical. Surreal Lunar Orbit Footage From Doomed GRAIL Mission 2013-01-11T17:45:00.247Z Wobbles in the distance between them told of variations in the Moon’s gravitational field. Two Space Probes to Crash, Intentionally, on Moon 2012-12-14T04:54:42Z Her 300kg Grail twins have spent much of the past year mapping the Moon's gravitational field from an operational altitude of 55km. Grail mission shows battered Moon 2012-12-05T23:42:05Z Euclid will also exploit a technique called weak gravitational lensing, the bending of light from faraway galaxies as it passes through the gravitational field of nearer matter. Cosmology: Out of the darkness 2012-10-10T21:51:18.137Z It will also shed new insight into Einstein’s Theory of Relativity, as astronomers will be able to determine if Einstein correctly predicted what happens to matter in a strong gravitational field. Astronomers Measure The Radius Of A Black Hole 2012-09-29T07:05:22Z The result suggests that the gravitational field of the Moon is dominated by its deep craters rather than the structure of its interior. Tandem Satellite Mission Reveals a Thinner Lunar Crust 2012-09-17T17:15:00.180Z And that means their gravitational fields will be puny. 'Major Tim' aims for 'splashdown' 2012-06-11T09:12:40Z The higher-spin fields possess an even higher degree of symmetry than the gravitational field does, which is a lot. Where Do Space and Time Come From? New Theory Offers Answers, If Only Physicists Can Figure It Out 2012-04-12T21:15:02.897Z The Grail team will use the twin probes' measurements to construct highly detailed maps of the moon's gravitational field. Twin Moon Probes Start New Year by Entering Lunar Orbit 2012-01-03T10:45:00.180Z If α varies, then its effects must conserve energy and momentum, and they must influence the gravitational field in the universe. Inconstant Constants 2011-12-31T05:15:18.567Z The second finding is that there is a high correlation between variations in the Moon’s gravitational field and its topography. Tandem Satellite Mission Reveals a Thinner Lunar Crust 2012-09-17T17:15:00.180Z Mathematically, scientists represent the gravitational field in terms of spherical harmonics, which quantify undulations on different angular scales. Melting Glaciers Muck Up Earth s Gravitational Field 2011-12-22T19:15:02.563Z In 2016, NASA's Juno spacecraft will begin orbiting Jupiter and provide data on the planet's present-day interior by measuring its gravitational field. Is Jupiter Eating Its Own Heart? 2011-12-16T22:16:08Z The answer always given is “dark matter”—something that has a gravitational field, but does not interact much via the three forces of the Standard Model. The Higgs boson: Fantasy turned reality 2011-12-14T14:27:36Z That was why Son was seeing quark–gluon equations in a string-theory calculation, Starinets explained: they were the three-dimensional equivalent of the gravitational fields that he and Policastro had been studying in the four-dimensional universe. A meeting of disciplines: String theory finds a bench mate 2011-10-19T17:20:28.410Z “We are three to four times better in resolution compared to Kaguya and Lunar Prospector,” said Zuber, referring to two previous missions that mapped the Moon's gravitational field. Tandem Satellite Mission Reveals a Thinner Lunar Crust 2012-09-17T17:15:00.180Z Only about a decade ago did they begin to monitor glaciers on a global scale by using measurements of Earth’s gravitational field. Melting Glaciers Muck Up Earth s Gravitational Field 2011-12-22T19:15:02.563Z Mapping the Moon Two spacecraft that will fly in tandem around the Moon to precisely map its gravitational field, and therefore the composition of its interior, were launched from Cape Canaveral, Florida, on 10 September. Seven days: 9?15 September 2011 2011-09-14T17:20:55.837Z Beginning in March, once the spacecraft are orbiting just 34 miles above the moon’s surface, scientists will monitor the slight variations in distance between the two to map the moon’s entire gravitational field. NASA launches twin spacecraft to moon, 1st mission devoted to studying lunar insides, gravity 2011-09-10T17:02:07Z By measuring the varying gap between the two satellites, scientists will be able to create a precise map of the moon’s gravitational field. High wind delays NASA launch of twin moon probes 1 day, 1st mission focusing on lunar gravity 2011-09-08T16:22:19Z The two spacecraft exchange radio signals, recording fluctuations in their relative positions that are then used to reveal tiny accelerations and decelerations caused by variations in the Moon’s gravitational field. Tandem Satellite Mission Reveals a Thinner Lunar Crust 2012-09-17T17:15:00.180Z These eccentricities inside and on the surface of the moon mean that the gravitational field — that is, the attractive forces caused by the mass of the rock itself — isn’t spherical. NASA probes aim to help explain the origins of the moon and the Earth 2011-08-22T20:25:43Z It will reach the planet in 2016, where it will settle into orbit and gather data about the gas giant's magnetic and gravitational fields and content. Journey to a Giant World: Launch Shots of the Juno Mission to Jupiter [Slide Show] 2011-08-15T20:45:00.267Z More evidence may surface when the Gravity Recovery and Interior Laboratory mission, an American spacecraft designed to map the moon’s gravitational field, arrives in lunar orbit in around six months’ time. Lunar history: How do you solve a problem like maria? 2011-08-03T17:32:44Z The probe, which is propelled by an ion engine, allowed itself to be captured in the gravitational field of Vesta on Saturday. Asteroid Vesta reveals its scars 2011-07-19T11:44:01Z The probe is propelled by an ion engine and engineers put the spacecraft on a course to be captured in the gravitational field of Vesta. Dawn probe orbits asteroid Vesta 2011-07-17T09:50:48Z Its suite of detectors designed to measure the planet's gravitational field in detail will be able to deduce Jupiter's underlying structure. Jupiter, Mars and the Moon will all be visited soon 2011-06-29T10:00:00Z They would also like to see how these particles behave in the gravitational fields that exist in our "normal Universe". Science ups the 'anti' on matter 2011-06-06T09:12:12Z They would also like to see how these particles behave in the gravitational field of "our normal Universe". Science ups the 'anti' on matter 2011-06-06T09:12:12Z In 1992, applying for a job at the University of Texas, he was interviewed by Clark R. Wilson, a geophysicist there who described a planned experiment to measure variations in Earth’s gravitational field. Groundwater Depletion Is Detected From Space 2011-05-30T21:10:02Z Nudging each other with their gravitational fields, the embryos were often thrown from their regular orbits, sometimes into the path of another large rocky mass. Mars 'remains in embryonic state' 2011-05-27T13:35:50Z All of which affects the strength of the gravitational field, and the GOCE's orbit. The Geoid: Why a map of Earth's gravity yields a potato-shaped planet 2011-04-01T18:45:07.333Z A light ray following this shortest path, heading inward at the start of its journey and then bending outward, can be considered to be deflected by the apparent gravitational field, which is directed radially outward. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z The main problem the IAU could have with the proposal is that Tyche probably formed around another star and was later captured by the sun's gravitational field. NASA Telescope May Reveal New Planet, Tyche 2011-02-15T11:50:00Z Third, the behavior of light inside these cloaks is in many ways analogous to the behavior of light in a gravitational field under Einstein's general theory of relativity. Invisibility: After several years of research, it's just gotten weirder 2011-01-11T18:45:11.203Z A black hole is an ultra-dense object with such a powerful gravitational field that it absorbs all the light that passes near it and reflects nothing. Extreme X-Ray Source Supports New Class of Black Hole 2010-09-10T14:28:00Z Yet another equivalent definition: it is a surface that's everywhere perpendicular to the direction of a plumb-bob, or in other words, to the gravitational field. The Geoid: Why a map of Earth's gravity yields a potato-shaped planet 2011-04-01T18:45:07.333Z Although we cannot go into details here, Einstein's argument shows that the same effect is expected in a normal gravitational field such as that on the earth. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z It's the elegant arched trajectory naturally formed by any projectile, from an artillery round to a tomato, moving in a gravitational field. In basketball, shooting angle has a big effect on the chances of scoring 2010-03-16T04:00:00Z That's because those events are among the very few in all of sports that are powered entirely by Earth's gravitational field. 2010-02-16T05:00:00Z The battered derelict ships rolled and tumbled and spun out there, slowly, unhurried, in a mutual gravitational field which their own Gormann '87 had disturbed. The Graveyard of Space The probe measures these effects thus it measures the gravitational field. The Geoid: Why a map of Earth's gravity yields a potato-shaped planet 2011-04-01T18:45:07.333Z So we see that in a gravitational field clocks run slow, light rays bend in the direction of the field and a straight line is not the shortest distance between two points. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z That hookup—you tap the gravitational field direct? Felony The number above the screen our next navigational point, the spot where a star's gravitational field it strong enough to be detected in jump space. The Ethical Engineer He wondered how much damage one could do with a nearly weightless stone, then remembered that inertial mass was unaffected by gravitational fields, or the lack of them. The Dueling Machine As silent as a ghost, as quiet as a puff of moonlight she moved, riding the gravitational fields that spread like tangled, invisible spider webs between the stars. The Passenger On the other hand, in the merry-go-round type of gravitational field, the sum of angles of a triangle is less than 180 degrees, and this space is curved in the negative sense. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z You know that a gravitational field bends light; the light of a star is deflected in passing the sun. Astounding Stories, March, 1931 If we now refer such a domain to a reference-body K' possessing any kind of motion, then relative to K' there exists a gravitational field which is variable with respect to space and time. Relativity: The Special and General Theory They were definitely within the moon's gravitational field; their last hold upon the earth was severed. Astounding Stories of Super-Science, June, 1930 And that little maverick's gravitational field caught my rocket.... Shipwreck in the Sky A theoretical attack aimed at bringing the electromagnetic field into line with the gravitational field was undertaken by Einstein. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z Probably it detected us as soon as we entered the gravitational field of the planet. The Gun Nevertheless, the space-distribution of this gravitational field is �of a kind that would not be possible on Newton's theory of gravitation. Relativity: The Special and General Theory The wrenching of Earth's magnetic and gravitational fields. The Great Gray Plague Ato had also told Odin that the ship took energy from the gravitational field that it created when traveling at tremendous speeds, so that the motors were 99% efficient. Hunters Out of Space Since he considers acceleration phenomena as being caused by gravity, he will say that a light ray is bent when propagating through a gravitational field. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z Moving in its orbit, out beyond the orbit of Mars, it turned fairly rapidly on its axis—rapidly enough to overcome the feeble gravitational field of its mass. Anything You Can Do ... Now, as judged from the disc, the latter is in a gravitational field of potential f, hence the result we have obtained will hold quite generally for gravitational fields. Relativity: The Special and General Theory The cost of mining them, and of lifting the heavy ore from Mars' gravitational field and carrying it to Earth was prohibitive. Gold in the Sky Magnetic and gravitational fields also did not follow the same laws in stressed space as in unstressed extension. Talents, Incorporated One has only to watch a horizontal beam of antineutrons, say, emerging from an accelerator and see whether the beam bends down or up in the gravitational field of the earth. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z As the intensity of the gravitational field decreased, the velocity of the ship increased—not linearly, but logarithmically. Unwise Child An atom absorbs or emits light of a frequency which is dependent on the potential of the gravitational field in which it is situated. Relativity: The Special and General Theory And the Warlock, now in orbit somewhere overhead, was well within the planet’s gravitational field and could not use its Lawlor drive to escape with news of their predicament. Sand Doom Further, no gravitational field could be that intense. Skylark Three An antiapple might fall up in a true gravitational field, but it could hardly do so in Einstein's accelerated spaceship. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z When the interstellar ship Brainchild blew a tube—just one tube—of the external field that fought the ship’s mass against the space-strain of the planet’s gravitational field, the ship went off orbit. Unwise Child The electromagnetic and gravitational fields between those atoms are strong enough to increase the curvature of the space between them. Islands of Space We have just entered the gravitational field of Procyon planet Alpha, Mr. Briscoe. The Colors of Space It works by the interaction of the object's gravitational field with that of my projector, and we can spot anything sizable an hour away. Out Around Rigel Thus while an electron and a proton would fall with equal acceleration in a gravitational field, when these particles are placed in an electric field the electron is accelerated 1,836 times' faster. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z As I see it, the ray is actually a directed gravitational field. Invaders from the Infinite "To move around near a heavy mass—in the presence of a strong gravitational field," Arcot said. Islands of Space The electromagnetic theory has to be modified to allow for the presence of a gravitational field. The Concept of Nature The Tarner Lectures Delivered in Trinity College, November 1919 Then we got past, and into the gravitational field of the planet. Out Around Rigel Recalling Galileo's demonstration from the leaning tower of Pisa, he will be persuaded that an ordinary gravitational field exists in his space laboratory. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z But remember, it is not a body that pulls another body, but a gravitational field that pulls another. Invaders from the Infinite A gravitational field tends to warp space in such a way that the velocity of light is lower in its presence. Islands of Space For example the gravitational field due to a material object at rest in a certain time-system may be expected to exhibit in its formulation particular reference to spatial and temporal quantities of that time-system. The Concept of Nature The Tarner Lectures Delivered in Trinity College, November 1919 The Moonship's course would be a sort of slowly flattening curve, receding from Earth and becoming almost a straight line where Earth's and the Moon's gravitational fields cancelled each other. Space Tug This so-called principle of equivalence between observations carried out in an accelerated chamber and in a "real" gravitational field would be trivial, however, if it applied only to mechanical phenomena. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z The bit is just the marker of that gravitational field. Invaders from the Infinite The only thing we have to avoid is stars; their gravitational fields would drain the energy out of the apparatus and we'd end up in the center of a white-hot star. Islands of Space Do you not know that every mass of matter in motion carries with it an invisible gravitational field, every magnet an invisible magnetic field, and every living organism a mesmeric field? Back to Methuselah If we consider the gravitational field and the electromagnetic field from the stand-point of the ether hypothesis, we find a remarkable difference between the two. Sidelights on Relativity Until a couple of years ago, however, there seemed to be no hope of measuring the minute difference predicted between clocks at different heights in the earth's gravitational field. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z So matter is ordinarily a combination of magnetic, electrostatic and gravitational fields. Invaders from the Infinite The stars all have projections—shadows—in this space because of their intense gravitational fields. Islands of Space In the language of physics, the stratus forms an equipotential surface in the gravitational field permeating the earth's atmosphere. Man or Matter The existence of the gravitational field is inseparably bound up with the existence of space. Sidelights on Relativity Nevertheless, the space-distribution of this gravitational field is of a kind that would not be possible on Newton's theory of gravitation.* Relativity : the Special and General Theory Each bit is surrounded by a gravitational field. Invaders from the Infinite They had to wait for seven hours spinning dizzily around an improbably tiny star with an equally improbably titanic gravitational field. Islands of Space Remember, we have to get far enough out from the sun so that the gravitational field will be weak enough for the drive to overcome it. Islands of Space The gravitational field of the sun will drain a lot of our energy out, but so what? Islands of Space Now, as judged from the disc, the latter is in a gravititional field of potential f, hence the result we have obtained will hold quite generally for gravitational fields. Relativity : the Special and General Theory It is true, the sun's gravitational field does decrease, by a minute amount, despite the fact that our sun loses a thousand million tons of matter every four minutes. Invaders from the Infinite My only theory is that the double gravitational field, plus our own power field, produced a sort of cross-product that effected our brains. Islands of Space Our space control drive does not use up energy except in the presence of a strong gravitational field; most of it is drained back into our storage coils, with very little loss. Islands of Space That law operates in the case of the pulled body; it pulls the gravitational field as a normal field, the inverse-square law applying. Invaders from the Infinite But, if we enter a huge sun, the terrific gravitational field of the mass of matter would be enough to pull the energy of our coil away from us. Invaders from the Infinite Actually, they create an exceedingly intense, exceedingly small gravitational field, and direct it in a straight line. Invaders from the Infinite "In this sun's gravitational field, we'll lose a lot of power, but as long as it can be replaced, we're all right." Islands of Space Already within the titanic gravitational field, they could see that indescribable effects were being produced on them, and on the ship. Invaders from the Infinite |
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