单词 | Crab Nebula |
例句 | The Crab Nebula is the remains of a massive star that blew itself up. Cosmos 1980-01-01T00:00:00Z Seventh-grade Ron had a birthmark shaped like a crab, which made me think of the Crab Nebula. Schooled 2000-02-29T00:00:00Z One was a blast in 1054 that created the Crab Nebula. A Short History of Nearly Everything 2003-05-06T00:00:00Z The neutron star at the center of the Crab Nebula is an immense atomic nucleus, about the size of Manhattan, spinning thirty times a second. Cosmos 1980-01-01T00:00:00Z One evocative idea is that it was a cosmic catastrophe, the explosion of a nearby star—a supernova like the one that produced the Crab Nebula. Cosmos 1980-01-01T00:00:00Z Additional aspects of the inner workings of the Crab Nebula become more prominent and are seen in greater detail in the infrared light captured by Webb. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z The energy from the Crab Nebula pulsar arrives in sharp bursts that occur 30 times each second—with a regularity that would be the envy of a Swiss watchmaker. Astronomy 2016-10-13T00:00:00Z The Crab Nebula is among the most interesting and well studied objects in astronomy. The Hubble telescope turns 32: Here are some of its greatest hits 2022-04-23T04:00:00Z Weisskopf explained in a prelaunch news conference on Dec. 7 that inside the Crab Nebula is a lighthouse-like pulsing beacon, which is actually the corpse of the star that created the nebula. NASA Launches IXPE, a New X-Ray Space Telescope 2021-12-10T05:00:00Z How is the Crab Nebula accelerating these particles? Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z The radiation appears here as milky smoke-like material throughout the majority of the Crab Nebula's interior. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z But there is an even-better confirming argument, which brings us back to the Crab Nebula and its vast energy output. Astronomy 2016-10-13T00:00:00Z “Once he was sure a sky object wasn’t a comet, it was of no interest to him. Some of that stuff he found turned out to be Andromeda, and the Crab Nebula.” The Race to Develop the Moon 2019-04-29T04:00:00Z But in the celestial world of arthropods, none are more famous than the Crab Nebula, first observed by an amateur British astronomer in the 18th century. The Giant Squid Nebula and More Animals of the Cosmos 2018-03-20T04:00:00Z The photons then dash outward, with some heading straight to Earth, bringing with them important information about the Crab Nebula itself. Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z To locate the Crab Nebula's pulsar heart, trace the wisps that follow a circular ripple-like pattern in the middle to the bright white dot in the center. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z Who “pays the bills” for all the energy we see coming out of a remnant like the Crab Nebula? Astronomy 2016-10-13T00:00:00Z Cao says that one-quarter of each of the arrays will be installed in 2018, and he expects to obtain first results — likely to be an analysis of the Crab Nebula — in 2019. Chinese mountain observatory to probe cosmic-ray origins 2017-03-14T04:00:00Z But the Crab Nebula, produced by an exploding star, was incredibly bright and visible even through low-powered binoculars. The Giant Squid Nebula and More Animals of the Cosmos 2018-03-20T04:00:00Z Scientists have been observing these high-energy particles from the Crab Nebula for decades, though none had been this energetic. Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z The search for answers about the Crab Nebula's past continues as astronomers further analyze the Webb data and consult previous observations of the remnant taken by other telescopes. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z As its rotational energy is used to excite the Crab Nebula year after year, the pulsar inside the nebula slows down. Astronomy 2016-10-13T00:00:00Z As radio receivers go it was primitive, but FAST’s enormous collecting area enabled it to pick up signals from the Crab Pulsar, a radio source at the heart of the Crab Nebula. World’s largest radio telescope will search for dark matter, listen for aliens 2016-09-26T04:00:00Z A composite image from three space telescopes shows the intricate detail in the Crab Nebula, the remains of a star that exploded. This Week’s Night Sky: See Shooting Stars and a Cosmic Crab “There must be an incredible mechanism in the Crab Nebula to maximize acceleration against energy loss.” Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z This will mark Hubble's first look at emission lines from the Crab Nebula in over 20 years, and will enable astronomers to more accurately compare Webb and Hubble's findings. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z Several decades of careful observations have now shown that the Crab Nebula pulsar is not a perfectly regular clock as we originally thought: instead, it is gradually slowing down. Astronomy 2016-10-13T00:00:00Z Although the mysterious star faded from Earth’s night sky several years after it appeared, its remnants formed one of the most spectacular objects in our galaxy: the Crab Nebula. New Hubble Picture Gives First Peek Inside Crab Nebula 2016-07-07T04:00:00Z Look for the faint object known as Messier 1 or the Crab Nebula approximately five degrees above the thin crescent moon, or about the width of your fist held at arm’s length. This Week’s Night Sky: See Shooting Stars and a Cosmic Crab “Instead the energy spectrum keeps extending forward to, and beyond, 1 PeV, as in the case of the Crab Nebula.” Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z NASA's James Webb Space Telescope has gazed at the Crab Nebula, a supernova remnant located 6,500 light-years away in the constellation Taurus. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z How can the Crab Nebula shine with the energy of something like 100,000 Suns when the star that formed the nebula exploded almost 1000 years ago? Astronomy 2016-10-13T00:00:00Z This Hubble picture of the Crab Nebula shows its central neutron star—the rightmost of the two bright stars in the middle of the frame. New Hubble Picture Gives First Peek Inside Crab Nebula 2016-07-07T04:00:00Z The Crab Nebula shines at magnitude 9 and sits about 6,500 light-years from Earth. This Week’s Night Sky: See Shooting Stars and a Cosmic Crab Its relics are known today as the Crab Nebula, one of the most beautiful and well-studied objects in the sky. Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z The Crab Nebula is all that's left of one of the closest star explosions to Earth, a supernova recorded by Asian astronomers in the year 1054. Exploding Stars Spat Radioactive Debris All Over Earth 2016-04-06T04:00:00Z In addition to pulses of radio energy, we can observe pulses of visible light and X-rays from the Crab Nebula. Astronomy 2016-10-13T00:00:00Z The star acts as a convenient guidepost to the famed Crab Nebula, the remains of a supernova recorded by Chinese astronomers in A.D. This Week’s Night Sky: Stellar Ghoul Haunts Halloween Skies 2015-10-26T04:00:00Z The Crab Nebula is the remnant of an explosion of a massive star much larger than our sun, which Chinese astronomers recorded seeing in 1054 A.D. This Week's Night Sky: Best Time to Spot Distant Neptune 2015-08-31T04:00:00Z Scientists have long known the Crab Nebula as a very energetic astrophysical object beaming off radiation ranging from radio waves to gamma rays. Highest-Energy Particles Yet Arrive from Ancient Crab Nebula 2021-07-08T04:00:00Z One real-world example is the Crab Nebula, a supernova remnant about 6,500 light-years from Earth that emits high-energy x-ray and gamma-ray light. 'Superfluid spacetime' points to unification of physics 2014-06-18T04:00:00Z In other words, the slowing down of a rotating neutron star can explain precisely why the Crab Nebula is glowing with the amount of energy we observe. Astronomy 2016-10-13T00:00:00Z Look for the faint Crab Nebula, also known as Messier 1, approximately 1 degree above Zeta Tau and 5 degrees above the moon—slightly less than the width of three middle fingers at arm’s length. This Week’s Night Sky: Stellar Ghoul Haunts Halloween Skies 2015-10-26T04:00:00Z You see, light from the Crab Nebula is around 6,500 light-years from Earth — meaning light from the nebula takes 6,500 years to reach us. Five “Cosmos” moments that made creationists’ heads explode 2014-06-08T04:00:00Z Its detection in the Crab Nebula, the product of such a supernova event, confirms this expectation. [Report] Detection of a Noble Gas Molecular Ion, 36ArH+, in the Crab Nebula 2013-12-12T19:26:20.353Z Other archaeoastronomy features at the park include a pictograph that is thought to depict the ad 1054 supernova that formed the Crab Nebula. Seven days: 30 August–5 September 2013 2013-09-04T17:20:16.567Z For instance, in contrast to the case of SN 1054, which yielded the spinning pulsar in the Crab Nebula, none of these historical supernovae shows any evidence of stellar remnants that have survived their explosions. Astronomy 2016-10-13T00:00:00Z This scary looking pic, called The Crab Nebula, shows what happens after a massive star dies and collapses. Top space pics in new exhibition 2013-06-07T07:08:39Z And the Crab Nebula is relatively close to Earth; that there are celestial objects much farther away whose light reaches our planet means that they must be older as a result. Five “Cosmos” moments that made creationists’ heads explode 2014-06-08T04:00:00Z The detectors captured individual photons with microsecond precision as they streamed in from a bright pulsar in the Crab Nebula. Superconducting Detectors Offer High-Speed Astronomy 2012-01-25T00:15:00.307Z Comet, Halley's, the Crab Nebula mistaken for, 97. Astronomy with an Opera-glass A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments 2011-07-17T02:00:30.177Z Calculate the rotation speed of the Crab Nebula pulsar at its equator, given its period of 0.033 s. Astronomy 2016-10-13T00:00:00Z The Crab Nebula is composed mainly of the remnant of a supernova, which was seen on Earth to rip itself apart in the year 1054. Crab Nebula unleashes huge flare 2011-05-11T14:20:05Z X-ray and gamma-ray astronomers use the Crab Nebula as a standard, says astrophysicist Colleen Wilson-Hodge of NASA's Marshall Space Flight Center in Huntsville, Alabama, so "we need to rethink how we calibrate our instruments." Objects in the Telescope May Be Closer Than They Appear 2011-01-12T22:55:34Z Today, the remnant is called the Crab Nebula and its central region is seen here. Astronomy 2016-10-13T00:00:00Z This is sometimes called the "Crab Nebula," from the long sprays of nebulous matter which were seen surrounding it with Lord Rosse's great telescope. Astronomy with an Opera-glass A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments 2011-07-17T02:00:30.177Z |
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