| 单词 | redshift |
| 例句 | Try to imagine the colours of the spectrum as a way into redshift and the invisible light of the Cosmic Microwave Background. Digested read: Wonders of the Universe by Brian Cox 2011-03-21T21:30:01Z This redshift was found to be greater the further away the galaxy was, and was accepted as evidence of an expanding universe. Cycles of Time: An Extraordinary New View of the Universe by Roger Penrose ? review 2010-10-15T23:14:00Z These objects were high in redshift, meaning they emitted light skewed toward the red side of the electromagnetic spectrum, which is a sign of old and distant objects. JWST Might Have Spotted the First Dark Matter Stars 2023-07-20T04:00:00Z Euclid also has a near-infrared spectrometer and photometer for measuring each galaxy’s redshift, or the wavelength-stretching effect that occurs in light arriving from the faraway cosmos. How to Watch SpaceX Launch the Euclid Mission to Study the Dark Universe 2023-07-01T04:00:00Z Distances to faraway galaxies are measured in redshift—the degree to which light we see from a galaxy has been shifted to the red end of the spectrum by the universe’s expansion. JWST Will Hunt for Dead Solar Systems—and Much More—in Its Second Year of Science 2023-05-18T04:00:00Z It has a redshift value of 13.2, meaning we are seeing the galaxy as it appeared just 320 million years after the big bang. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z Astronomers measure cosmic distances with a parameter called redshift, which indicates how much the light from a faraway object has been stretched. The Webb Telescope Is Just Getting Started 2022-12-27T05:00:00Z “This can play a very good role in some basic physics research, such as non-Newtonian gravitation and gravitational redshift” research, he said. China Maps Out Plans to Put Astronauts on the Moon and on Mars 2022-12-12T05:00:00Z When used in conjunction with ground-based instruments, they’ll be able to convert redshift into length to infer the distances to each galaxy. How to Watch SpaceX Launch the Euclid Mission to Study the Dark Universe 2023-07-01T04:00:00Z Eisenstein will hunt for galaxies beyond redshift 15, farther than any others conclusively seen. JWST Will Hunt for Dead Solar Systems—and Much More—in Its Second Year of Science 2023-05-18T04:00:00Z The galaxy is actually a dusty imposter located at a redshift of 4.9, a still impressive but not at all record-breaking 1.2 billion years after the big bang. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z Just a few months ago a redshift of 8, which corresponds to a time when the universe was about 646 million years old, was considered a high redshift. The Webb Telescope Is Just Getting Started 2022-12-27T05:00:00Z He found his explanation in a phenomenon that science knows as the cosmological redshift. Maarten Schmidt, astronomer who explained quasars, dies at 92 2022-09-26T04:00:00Z As light from a very distant galaxy travels across the cosmic abyss, it is stretched by the expansion of the universe—a broadening of wavelengths known as redshift. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z “We don’t yet have a convincing case of a galaxy beyond redshift 15,” he says. JWST Will Hunt for Dead Solar Systems—and Much More—in Its Second Year of Science 2023-05-18T04:00:00Z “Maybe galaxy formation started already at a redshift of 20,” van Dokkum says, referring to a time a mere 180 million years after the big bang, an epoch scarcely fathomable prior to JWST. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z The ones that look the reddest — that have the highest redshift — are presumed to be the farthest away. Webb telescope is already challenging what astronomers thought they knew 2022-08-26T04:00:00Z Applying the principle of the cosmological redshift placed the quasar at a distance more than 2 billion light-years away. Maarten Schmidt, astronomer who explained quasars, dies at 92 2022-09-26T04:00:00Z The higher the redshift value, the more stretching the light has experienced, and thus the more distant its source galaxy will be. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z The redshift showed that the light from it took about 2.5 billion years to reach us. Astronomy 2016-10-13T00:00:00Z Astronomers usually pin down cosmic coordinates via precisely measuring redshift, a stretching of a galaxy’s light toward the red end of the electromagnetic spectrum as a result of the universe’s expansion. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z Precisely quantifying this redshift yields a distance and age estimate. Behold, Some Hidden Gems from JWST’s First Images 2022-07-21T04:00:00Z Because the light wavelengths of receding objects are extended, visible light is shifted toward the red end of the spectrum, called a redshift. An Introduction to Geology 2017-01-01T00:00:00Z Hubble’s record for the most distant known galaxy had been GN-z11, spotted in 2015 at a redshift of 11 thanks to a 2009 upgrade to the telescope that enhanced its modest infrared capabilities. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z Suppose a distant quasar has a redshift of 5. Astronomy 2016-10-13T00:00:00Z For example, a light bulb that emits pure violet light, if placed in a region of the cosmos roughly corresponding to a redshift of 1 as seen from Earth, would appear as deep red. Why Do Astronomers Seek the Most Distant Galaxies? 2022-07-01T04:00:00Z The degree of this “redshift” tells astronomers how distant the object is. Ancient galaxy’s spin suggests universe’s first stars quickly coalesced into disks 2022-06-30T04:00:00Z In addition, Hubble noticed that galaxies that were farther away from Earth also had a greater amount of redshift, and thus, the faster they are traveling away from us. An Introduction to Geology 2017-01-01T00:00:00Z A redshift of 11 corresponds to a cosmic age of about 400 million years, a point at the brink of when galaxy formation was thought to begin. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z If they did not obey the rule that large redshift means large distance, then they could be much closer, and their luminosity could be a lot less. Astronomy 2016-10-13T00:00:00Z If all cosmic history is a book, the redshift acts as the page numbers, indicating when something is happening in the story. Why Do Astronomers Seek the Most Distant Galaxies? 2022-07-01T04:00:00Z Precise redshift measurements, based on the unique spectral fingerprints of atoms that are abundant within galaxies, thus allow astronomers to construct three-dimensional maps of the cosmic web. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z Ascending further, astronomers locate SNe Ia in even more far-flung galaxies, using them to establish a relationship between distance and a galaxy’s redshift, a measure of how fast it is moving away from us. Astronomers Gear Up to Grapple with the High-Tension Cosmos 2022-04-18T04:00:00Z In their thirst for quick results, the researchers relied on redshift estimates derived from simple brightness-based measurements. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z If a quasar is moving away from us at v/c = 0.8, what is the measured redshift? Astronomy 2016-10-13T00:00:00Z This is called redshift because it shifts light of shorter wavelengths — like blue or white light — to longer wavelengths like red or infrared light. The most powerful space telescope ever built will look back in time to the Dark Ages of the universe 2021-10-14T04:00:00Z But radio telescopes can measure how the intensity of radio emission varies across the sky at many different wavelengths at once, enabling astronomers to construct three-dimensional maps without separate redshift measurements. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z Visible light is shifted to the red, experiencing the so-called redshift. Watching the Universe Expand in Real Time 2021-05-06T04:00:00Z These are easier to obtain, but less precise than direct measurements of redshift, which require more dedicated observation time. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z Show that you will obtain the same redshift regardless of which absorption line you measure. Astronomy 2016-10-13T00:00:00Z But many rivers in the Northeast showed a “redshift” that made them appear more yellow, indicating lower water levels or increasing sediment. Data Show Shifting Colors of U.S. Rivers 2021-04-08T04:00:00Z Such a signal would appear peculiar if it originates from a distant galaxy whose redshift is known based on identified emission or absorption lines originating from its stars or interstellar gas. The Cosmic Dawn of Technology 2020-12-28T05:00:00Z This offers a much better statistical sample for measuring the tiny redshift drift at each cosmic epoch. Watching the Universe Expand in Real Time 2021-05-06T04:00:00Z Another team, meanwhile, found evidence for galaxies the size of our Milky Way at a redshift of 10, less than 500 million years after the big bang. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z This means we must be able to measure the redshift of each galaxy in our map. Astronomy 2016-10-13T00:00:00Z Astronomers measure the distance of a galaxy by determining its redshift, which is a measurement of how fast it is moving away from Earth. The most distant galaxy is upending our model of the universe's history 2020-12-27T05:00:00Z Astronomers use this “redshift,” which is easily measured, as a proxy for relative distance in the universe. Beyond the Milky Way, a Galactic Wall 2020-07-10T04:00:00Z Normally, astronomers calculate the distance to another galaxy by finding its spectroscopic redshift—the amount by which the galaxy’s light is shifted toward the longer wavelengths of the red side of the spectrum. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z Much other work will be done to follow-up the growing list of high redshift candidates. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z This means that the light has stretched more than light from closer ones and thus shows a greater redshift. Astronomy 2016-10-13T00:00:00Z The farther the galaxy, the greater the redshift. The most distant galaxy is upending our model of the universe's history 2020-12-27T05:00:00Z DAG’s large aperture will enable it to capture light from distant, faint objects like high redshift galaxies, allowing astronomers to probe far back into the universe’s history. ‘We put everything into it.’ Modest telescope could have big impact on Turkish science 2020-03-04T05:00:00Z The greater the redshift, the farther away the object. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z In 1927 Belgian physicist and priest Georges Lemaître noticed a pattern: The more distant the galaxy, the greater its redshift. How a Dispute over a Single Number Became a Cosmological Crisis 2020-02-18T05:00:00Z For light waves, the increase in wavelength would be seen as a redshift. Astronomy 2016-10-13T00:00:00Z The effect is called redshift, and means that if you want to look further back in time, you must look at things which appear invisible to us. The telescope that looks further back in time 2020-01-05T05:00:00Z Hubble’s measurements indicated that the redshift of a distant galaxy is greater than that of one closer to the earth. The Evolution of the Universe 2019-10-08T04:00:00Z So Hildebrandt’s team turned to something called photometric redshift, which involves taking multiple images of the same patch of sky in different wavelengths, spanning the optical and near-infrared ranges. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z To get a distance to a galaxy, astronomers split its light into a spectrum and measure its redshift, or the stretching of its light by the expansion of the universe. Robot detector to map cosmos for clues to dark energy 2019-09-11T04:00:00Z The “redshift” of each galaxy is indicated below each box, denoted by the symbol “z.” Astronomy 2016-10-13T00:00:00Z Twenty-four years of observations of the S-02 star showed that its gravitational redshift — seen when gravity stretches light to a longer, redder wavelength — is just as predicted. Daily briefing: Current global warming is unparalleled in 2,000 years 2019-07-25T04:00:00Z The redshift effect in nearby galaxies is relatively subtle, requiring good instrumentation to detect it. The Evolution of the Universe 2019-10-08T04:00:00Z The researchers used those images to estimate the redshift of individual galaxies in each one. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z The study, relying heavily on data from the Keck Observatory in Hawaii, focused on an effect called gravitational redshift. Star orbiting massive black hole lends support to Einstein's theory 2019-07-25T04:00:00Z The larger the redshift, the more distant the galaxy, and therefore the further astronomers are seeing back in time. Astronomy 2016-10-13T00:00:00Z This time dilation is known as gravitational redshift. Wayward Satellites Test Einstein's Theory of General Relativity 2019-02-08T05:00:00Z An associated redshift, such as that of the sirens’ host galaxy, provides the second piece of the new method. The Universe's Fate Rests on the Hubble Constant--Which Has So Far Eluded Astronomers 2019-01-30T05:00:00Z Infrared measurements capture a greater amount of the light from such galaxies, leading to better estimates of their photometric redshift. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z This causes a shift to the red end of the electromagnetic spectrum, a gravitational redshift. Star orbiting massive black hole lends support to Einstein's theory 2019-07-25T04:00:00Z Here, because it is gravity and not motion that produces the longer wavelengths, we call the effect a gravitational redshift. Astronomy 2016-10-13T00:00:00Z This gravitational redshift, as it is known, was one of the first predictions of Einstein’s theory. Trolling the Monster in the Heart of the Milky Way 2018-10-30T04:00:00Z The researchers used redshift data from the Dark Energy Survey, which just finished mapping a portion of the southern sky more broadly and deeply than any previous survey. The Universe's Fate Rests on the Hubble Constant--Which Has So Far Eluded Astronomers 2019-01-30T05:00:00Z The first is the gravitational redshift, a preliminary detection of which is announced today. Star swings around black hole, tests gravity 2018-07-29T04:00:00Z Combining the observations allowed Genzel’s team to detect the star’s gravitational redshift—its light being stretched to longer wavelengths by the black hole’s immense gravitational pull, which is consistent with the predictions of general relativity. Milky Way's Black Hole Provides Long-sought Test of Einstein's General Relativity 2018-07-26T04:00:00Z The tremendous redshift will make it very difficult to observe any radiation from the “frozen” victims of the black hole. Astronomy 2016-10-13T00:00:00Z 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 The redshift data combined with the distance measurement provided researchers with their new figure for the constant. The Universe's Fate Rests on the Hubble Constant--Which Has So Far Eluded Astronomers 2019-01-30T05:00:00Z The relativistic redshift, in contrast, only adds about 200 km/s. Star swings around black hole, tests gravity 2018-07-29T04:00:00Z By observing a cluster of stars near the hole, they were able to confirm a phenomenon known as "gravitational redshift". Einstein theory passes black hole test 2018-07-26T04:00:00Z To his surprise, the spectral lines of most galaxies showed an astounding redshift. Astronomy 2016-10-13T00:00:00Z The second, called the relativistic transverse Doppler effect—predicted by Einstein’s earlier theory of special relativity—is a redshift that occurs when an object is moving tangentially to the line of sight. Star’s black hole encounter puts Einstein’s theory of gravity to the test 2018-07-26T04:00:00Z Combining the observations allowed Genzel’s team to detect the star’s gravitational redshift — its light being stretched to longer wavelengths by the black hole’s immense gravitational pull, which is consistent with the predictions of general relativity. Milky Way’s black hole provides long-sought test of Einstein’s general relativity 2018-07-25T04:00:00Z This change, called gravitational redshift, is one of the long-sought confirmations that Einstein’s master framework of gravity correctly describes how the universe works. Star swings around black hole, tests gravity 2018-07-29T04:00:00Z In practice this corresponds to a shift in the wavelength to the red part of the light spectrum - hence "redshift". Einstein theory passes black hole test 2018-07-26T04:00:00Z Recall from the chapter on Radiation and Spectra that a redshift is seen when the source of the waves is moving away from us. Astronomy 2016-10-13T00:00:00Z This value is less than the redshift of one of the X-ray absorbers, which implies that this absorber is either part of the BL Lac object, or a misidentification of something else. Missing matter found in the cosmic web 2018-06-19T04:00:00Z They report a redshift of about 9.11, which implies that the galaxy is being viewed as it was when the Universe was roughly one-tenth of its current size and about 550 million years old. Distant galaxy formed stars only 250 million years after the Big Bang 2018-05-15T04:00:00Z We detect an emission line of doubly ionized oxygen at a redshift of 9.1096 ± 0.0006, with an uncertainty of one standard deviation. The onset of star formation 250 million years after the Big Bang 2018-05-15T04:00:00Z This behaviour closely mimicked a phenomenon known as redshift, in which the expansion of space gradually stretches light and so increases its wavelength. Universe's first moments mimicked with ultracool atoms 2018-04-24T04:00:00Z If a quasar has a redshift of 3.3, at what fraction of the speed of light is it moving away from us? Astronomy 2016-10-13T00:00:00Z It also tells us the 'redshift' of the event. Stephen Hawking's final interview 2018-03-26T04:00:00Z This is the highest redshift ever inferred from a spectral line5, and is only slightly lower than a redshift reported by using a broader, possibly less robust, spectral feature6. Distant galaxy formed stars only 250 million years after the Big Bang 2018-05-15T04:00:00Z This precisely determined redshift indicates that the red rest-frame optical colour arises from a dominant stellar component that formed about 250 million years after the Big Bang, corresponding to a redshift of about 15. The onset of star formation 250 million years after the Big Bang 2018-05-15T04:00:00Z The extent of this redshift told the team when those CMB photons were absorbed: about 180 million years after the universe's birth. Astronomers Glimpse Signposts of Universe's First Stars 2018-02-28T05:00:00Z Would this line be observable with a ground-based telescope in a quasar with zero redshift? Astronomy 2016-10-13T00:00:00Z The higher the redshift, the greater the distance, and the farther back astronomers are looking in time when they observe the object. Farthest monster black hole found 2017-12-06T05:00:00Z Gemini spectroscopy of supernovae from SNLS: improving high redshift SN selection and classification. Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star 2017-11-07T05:00:00Z We verified the robustness of this peculiar velocity correction by comparing it with the velocity field reconstructed from the 2MASS redshift survey29, 37. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z Just ask an astrophysicist: one innocent slip of the keys and your redshift becomes, well, another thing entirely. You're always just a typo away from the Large Hardon Collider 2017-06-19T04:00:00Z This image was made with the Hubble Space Telescope and shows the field around a luminous galaxy at a redshift z = 8.68, which corresponds to 13.2 billion light years. Astronomy 2016-10-13T00:00:00Z The quasar's distance is described by a property called its redshift - a measurement of how much the wavelength of its light is stretched by the expansion of the Universe before reaching Earth. Farthest monster black hole found 2017-12-06T05:00:00Z The size of this so-called “redshift” therefore gives the distance to the galaxy. Could Cold Spot in the Sky Be a Bruise from a Collision with a Parallel Universe? 2017-06-02T04:00:00Z However, within the approximately 190-Mpc horizon redshift corrections are at most about 5%, and the Hubble constant measurement is a weak function of these, meaning that the overall effect is even smaller. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z The former measures X-rays; the latter specializes in detecting redshift, the stretching of light that is detected as something travels through space. This black hole is being pushed around its galaxy by gravitational waves 2017-03-24T04:00:00Z Someone in your group describes the redshift surveys of galaxies to a friend, who says he’s never heard of a bigger waste of effort. Astronomy 2016-10-13T00:00:00Z This is called a redshift, which occurs as the wavelength of energy lengthens, moving toward the red end of the spectrum. This new map of the universe charts out 1.2 million galaxies 2016-07-15T04:00:00Z For reference, our nearest neighbor the Andromeda Galaxy, while over 2.5 million light years away, is only at redshift of −0.001001. Week in Geek: A galaxy far, far away edition 2016-03-06T05:00:00Z The dependence on source parameters is on redshifted parameters, which introduces an explicit redshift dependence. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z The scientists determined the age of the galaxy by measuring its “redshift,” the way the wavelength of light changes colors as the universe expands. NASA’s Hubble Offers Glimpse of Early Universe 2016-03-04T05:00:00Z The total star formation taking place in galaxies across the universe peaked at about the same redshift. Astronomy 2016-10-13T00:00:00Z The higher the redshift number assigned to an object, the more distant it is and the earlier it is being viewed in cosmic history. Hubble sets new cosmic distance record - BBC News 2016-03-03T05:00:00Z There are two types of redshift: Doppler and cosmological, this is the latter - it’s a logarithmic distance scale based on the expansion of the universe. Week in Geek: A galaxy far, far away edition 2016-03-06T05:00:00Z As the LIGO–Virgo detectors improve in sensitivity, the redshift dependence in the gravitational-wave selection effects will become more important, as will electromagnetic selection effects. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z For a long time, competing teams of astronomers were just trying to reach a redshift of 9, about 550 million years after the Big Bang. Astronomers glimpse the farthest back in time and distance than they have ever seen 2016-03-03T05:00:00Z One technique is to use their colors and apparent brightnesses to try to roughly estimate their redshift. Astronomy 2016-10-13T00:00:00Z When astronomers discuss distance in the cosmos, they use the term "redshift". Hubble sets new cosmic distance record - BBC News 2016-03-03T05:00:00Z Cosmologists estimate the rate of the Universe’s expansion by comparing this redshift of galaxies with how far the galaxies are from us. Gravitational waves: 6 cosmic questions they can tackle 2016-02-08T05:00:00Z The position and redshift of this galaxy allow us to estimate the appropriate value of the Hubble flow velocity. A gravitational-wave standard siren measurement of the Hubble constant : Nature : Nature Research 2017-10-15T04:00:00Z He notes that the oscillations they observed across the metric of time would not be as obvious in terms of redshift. Physicists Claim Universe 'Rings' Like Crystal Glass 2015-06-29T04:00:00Z The redshift of the galaxy such a bulb is in can tell us how fast it is moving in the universe. Astronomy 2016-10-13T00:00:00Z And because of the expansion, light from distant galaxies undergoes a “redshift”—wavelength increases, pushing the light toward the red side of the electromagnetic spectrum, outside the visible realm. How Astronomers Discovered the Universe's Hidden Light 2015-05-25T04:00:00Z “Even if one of us is pretty sure that our photometric redshift is good, astronomers want to see a spectrum. But that is really hard to do, even with Keck.” Astronomers Measure Distance to Farthest Galaxy Yet 2015-05-05T04:00:00Z Adding in their redshift, or how quickly they appeared to be moving away from us, he was able to deduce that the Universe was expanding, and even to measure the rate of that expansion. The Biggest Mistake About The Big Bang 2015-04-20T04:00:00Z Almost all of our results on dark energy are going to rely crucially on this color redshift technique. Dark Energy Discernment Dithers over Quantum Jitters or an Undetected Field 2014-10-01T04:00:00Z Thinking about the ideas of space and time in Einstein’s general theory of relativity, how do we explain the fact that all galaxies outside our Local Group show a redshift? Astronomy 2016-10-13T00:00:00Z The redshift is a measure of the way light is stretched by the expansion of the Universe and is used by scientists to calculate cosmic distances. Hints of elusive early stars found 2014-08-21T04:00:00Z In the chaotic heart of our Milky Way’s dusty core; arguably, there lies the secret to star formation both here and at high redshift. Herschel Space Telescope Lifts Veil On Milky Way's Dusty Core 2013-11-01T02:41:00Z Astronomers rate this apparent colour-change on a scale that is called redshift. ‘Most distant galaxy’ discovered 2013-10-23T17:00:28Z Harlow Shapley, who wrote an article in 1919 on the subject, was an astronomer, responsible for the detection of the redshift in distant nebulae and hence, indirectly, for our present concept of an expanding universe. How Science Figured Out the Age of the Earth 2013-10-20T14:15:00.407Z When the star is moving away from us, the lines in its spectrum show a tiny redshift; when it is moving toward us, they show a tiny blueshift. Astronomy 2016-10-13T00:00:00Z The higher the redshift, the farther the object is. Hints of elusive early stars found 2014-08-21T04:00:00Z In Dr Wetterich’s picture of the cosmos the redshift others attribute to expansion is, rather, the result of the universe putting on weight. Dark energy: A problem of cosmic proportions 2013-08-22T15:00:06Z He utilized what astronomical redshift data was available at the time, to plot the rate of expansion, deriving what’s become known as Hubble’s Law, two years before Hubble. Scientists And The Rush To Publish: How Times Have Changed 2013-06-04T14:32:19Z The previous record holder was found at about redshift 10. Galaxy Might Be Most Distant Seen Object 2012-11-20T22:45:00.240Z The advent of space-age technology made it possible to measure gravitational redshift with very high accuracy. Astronomy 2016-10-13T00:00:00Z Harps does not spot planets directly - it detects the slight changes in colour of a stars' light caused by planets' gentle gravitational tugs - the "redshift" and "blueshift" that small motions cause. New player in 'second Earth' hunt 2012-11-08T10:33:49Z The discovery smashes the record held by a supernova identified by Cooke and his colleagues in 2009 at redshift 2.36, which corresponds to a light-travel time of about 11 billion years. Astronomers Spot Most Distant Supernova Yet 2012-11-05T23:45:02.630Z The redshift is a measure of the supernova's distance. Farthest Supernova Yet Marked Death of Very Massive Star 2012-10-31T20:20:03Z Harps and instruments like it measure the subtle change in colour - the redshift or blueshift - of the host star's light as its orbit moves it slightly closer to and further away from Earth. Exoplanet found 'just next door' 2012-10-17T08:02:13Z Scientists then had to consider the alternative that the distance estimated from the redshift was incorrect. Astronomy 2016-10-13T00:00:00Z Codex will be installed on the recently approved European Extremely Large Telescope in Chile and will measure the change in the Hubble expansion rate — the 'redshift drift' — over a ten-year period. Cosmology: Out of the darkness 2012-10-10T21:51:18.137Z "This whole subject of 21cm cosmology is about to open up; there are at least four different groups building radio telescope arrays focussing on about redshift 10," he said. New window into earliest Universe 2012-06-20T17:54:32Z The faster the expansion, the greater the redshift. Cosmology: The dark side of the universe 2012-02-16T15:59:48Z Put another way: Could it be that α changes not with redshift but with position on the sky? Inconstant Constants 2011-12-31T05:15:18.567Z Thus, what the measured redshift of light from an object is telling us is how much the universe has expanded since the light left the object. Astronomy 2016-10-13T00:00:00Z The mass of the galaxies were then determined, and the gravity and observed redshift perfectly aligned with what is predicted by General Relativity. Theory of Relativity Confirmed on Cosmic Scales 2011-09-29T12:08:53Z The hope was to detect gravitational redshift "by studying the properties of the redshift distribution of galaxies in clusters rather than by looking at redshifts of individual galaxies separately," Wojtak explains. Galaxy Clusters Validate Einstein's Theory 2011-09-28T18:28:41Z Some physicists felt that the redshift in the light of distant galaxies, which Edwin Hubble took evidence for the expansion of the universe, might be due to the phenomenon of “œtired light.” Why Is Quantum Gravity So Hard? And Why Did Stalin Execute the Man Who Pioneered the Subject? 2011-07-14T11:45:00.427Z The new VLT data showed not a smaller value of α at high redshift but a larger value, larger by just about the same amount as the Keck data is smaller. Inconstant Constants 2011-12-31T05:15:18.567Z Observer C sees the waves stretched out by the motion and sees a redshift. Astronomy 2016-10-13T00:00:00Z That places the newfound quasar about 100 million years earlier in cosmic history than the previous record holder, which was at redshift 6.44. Brilliant, but Distant: Most Far-Flung Known Quasar Offers Glimpse into Early Universe 2011-06-29T19:45:05.217Z This redshift implies that galaxies are moving away from the Earth, and later astronomers interpreted it as evidence that the Universe seems to be expanding. Amateur Historian Claims Edwin Hubble Censored Rival's Work 2011-06-27T22:45:02.583Z If his cesium atoms still accumulate a phase difference, then it would be due to the gravitational redshift, not the universality of free fall. Physicists Dispute Table-Top Relativity Test 2011-06-09T22:15:00.357Z This predicted pattern was consistent with our earlier data from the Keck telescopes, which seemed to indicate that a redshift dependence of α might be linked to a time variation. Inconstant Constants 2011-12-31T05:15:18.567Z When the source moves away from you and the wavelength gets longer, we call the change in colors a redshift. Astronomy 2016-10-13T00:00:00Z But the rapidity of change raises an eyebrow for Matthew Lehnert of the Paris Observatory, lead author of the October paper announcing the redshift 8.55 galaxy. Olden Gaze: Galaxy in Hubble Image May Be the Most Distant Object Ever Seen 2011-01-26T21:45:00.247Z Measuring this redshift tells astronomers the age - and distance - of stars, galaxies, and other heavenly objects. Hubble spots presumed oldest galaxy: Hot, faint, and 13 billion years old 2011-01-26T18:13:00Z The experiment, which will perform important synchronizations of atomic clocks around the world, is also supposed to test the gravitational redshift effect--but is capable of far less precision than the table-top experiment. Physicists Dispute Table-Top Relativity Test 2011-06-09T22:15:00.357Z The more distant a body, the greater its redshift. New Cosmic Distance Record-Holder 2010-10-20T18:23:00Z Because the Doppler effect was first used with visible light in astronomy, the terms “ blueshift” and “ redshift” became well established. Astronomy 2016-10-13T00:00:00Z Perhaps Hubble's field of view was simply a bit barren, Lehnert ventures—if a neighboring patch of the sky contained a few more galaxies at redshift 10, the observed evolution would look to be smoother. Olden Gaze: Galaxy in Hubble Image May Be the Most Distant Object Ever Seen 2011-01-26T21:45:00.247Z But because Hubble's new camera lacks the capability to directly measure redshift, Bouwens and his colleagues instead employed a proxy measure made possible by a cloudy quirk of the primordial universe. Hubble spots presumed oldest galaxy: Hot, faint, and 13 billion years old 2011-01-26T18:13:00Z The speeds are known as redshift velocities, for their effect on a galaxy’s spectrum. John Huchra Dies at 61; Maps Altered Ideas on Universe 2010-10-14T04:30:00Z When light or other radiation emerges from a compact smaller remnant, such as a white dwarf or neutron star, it shows a gravitational redshift due to the slowing of time. Astronomy 2016-10-13T00:00:00Z Star B is moving away from us, so its line shows a redshift. Astronomy 2016-10-13T00:00:00Z The galaxy’s redshift tells us its recessional velocity is 5000 km/s. Astronomy 2016-10-13T00:00:00Z Quasars have been found in the cores of both spiral and elliptical galaxies, and each quasar has the same redshift as its host galaxy. Astronomy 2016-10-13T00:00:00Z Suppose you do find one and only one galaxy with a quasar very close by, and the redshift of the quasar is six times larger than that of the galaxy. Astronomy 2016-10-13T00:00:00Z Have your group discuss whether you could then conclude that the two objects are at the same distance and that redshift is not a reliable indicator of distance. Astronomy 2016-10-13T00:00:00Z The effect is to cause both a redshift and a blueshift, widening the spread of frequencies in the radio beam. Astronomy 2016-10-13T00:00:00Z Suppose every galaxy has a nearby quasar with a different redshift. Astronomy 2016-10-13T00:00:00Z The conversion of redshift to a distance depends on certain properties of the universe, including the value of the Hubble constant and how much mass it contains. Astronomy 2016-10-13T00:00:00Z The redshift measures how much a galaxy’s ultraviolet and visible light has been stretched to infrared wavelengths by the universe’s expansion. Astronomy 2016-10-13T00:00:00Z One of the seven galaxies may be a distance breaker, observed at a redshift of 11.9. Astronomy 2016-10-13T00:00:00Z |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。