| 单词 | supergiant |
| 例句 | The supergiant is an unlikely source of X-rays, and it is tempting to identify the companion inferred in visible light with the source detected in X-ray light. Cosmos 1980-01-01T00:00:00Z The X-rays are plausibly generated by friction in the disk of gas and dust accreted around Cyg X-l from its supergiant companion. Cosmos 1980-01-01T00:00:00Z Afterward, we looked into a small, eight-inch portable telescope, hauled up the mountain on our account, at the famous red supergiant star, Betelgeuse, and Sirius, which glittered like a diamond under a jeweler’s loupe. In Chile’s Elqui Valley, Intergalactic Sightseeing Is the Star 2015-06-25T04:00:00Z One of the closest candidates of this size is the red supergiant Betelgeuse in the constellation of Orion, located at a safe distance of about 150 parsecs from our solar system. Exploding stars 2023-11-02T04:00:00Z “We think it was quite a complicated merger,” Shenar says—one that possibly involved a helium-rich lower mass star spiraling into the puffy stellar atmosphere of an accompanying red supergiant. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z Pledger’s findings confirmed the stellar culprit to be a red supergiant. Nearby Supernova Gives Unique View of a Dying Star’s Last Days 2023-07-21T04:00:00Z Even if you don’t know it by name, the red supergiant star Betelgeuse is one of the most familiar sights in the heavens above—a gleaming ruddy dot at the shoulder of the constellation Orion. Betelguese’s Brightening Raises Hopes for a Supernova Spectacle 2023-05-15T04:00:00Z This image compares the size of the Sun to that of Delta Boötis, a giant star, and Xi Cygni, a supergiant. Astronomy 2016-10-13T00:00:00Z Betelgeuse, the red supergiant star easily recognizable as the right “shoulder” of the constellation Orion, had suddenly and mysteriously dimmed by more than a factor of two. Betelgeuse ‘Great Dimming’ Mystery Solved by Satellite Photobomb 2022-06-17T04:00:00Z The previous record-holder, Icarus, also a blue supergiant star spotted by Hubble, formed 9.4 billion years ago. Twinkle, twinkle: Astronomers discover farthest star yet 2022-03-30T04:00:00Z While seemingly small, that amount is “more than we would expect from a red supergiant star,” Jacobson-Galán says. Nearby Supernova Gives Unique View of a Dying Star’s Last Days 2023-07-21T04:00:00Z “Still, more supernovae are expected to take place in the near future, like Antares, a red supergiant star near the edge of the bubble that could go any century now,” Dr. Alves said. A New Map of the Sun’s Local Bubble 2022-01-20T05:00:00Z Also, when more massive stars become red giants, they become so bright and large that we call them supergiants. Astronomy 2016-10-13T00:00:00Z Most pulsars are now understood to be neutron stars, the extraordinarily dense husks of collapsed supergiants. Antony Hewish, astronomer who won Nobel Prize for the discovery of pulsars, dies at 97 2021-09-17T04:00:00Z Betelgeuse is a so-called red supergiant, 887 times as large as our own sun. Betelgeuse Merely Burped, Astronomers Conclude 2021-06-17T04:00:00Z “It points, maybe, to our ignorance about how red supergiants evolve and die in the last few years before explosion.” Nearby Supernova Gives Unique View of a Dying Star’s Last Days 2023-07-21T04:00:00Z The acquisition of Simon & Schuster by the No. 1 U.S. publisher will create a book industry supergiant — so long as it clears antitrust hurdles. Penguin Random House to purchase Simon & Schuster in massive publishing deal 2020-11-25T05:00:00Z The star that blew up had been included in earlier surveys of the Large Magellanic Cloud, and as a result, we know the star was a blue supergiant just before the explosion. Astronomy 2016-10-13T00:00:00Z However, seven of them are considered "supergiants," at more than 12 inches in length, the researchers added. 13-inch long 'Darth Vader' crustacean found in Indonesia 2020-08-20T04:00:00Z Red supergiants are stars in the last violent stages of their evolution. Betelgeuse Merely Burped, Astronomers Conclude 2021-06-17T04:00:00Z Red supergiants are known to develop such pulsations in the denouement of their life. Nearby Supernova Gives Unique View of a Dying Star’s Last Days 2023-07-21T04:00:00Z Astronomers say big cool patches on a "supergiant" star close to Earth were behind its surprise dimming last year. Nearby supergiant star's dimming explained 2020-06-29T04:00:00Z By this time, the star was a red supergiant, emitting about 100,000 times more energy than the Sun. Astronomy 2016-10-13T00:00:00Z Their supergiant cousins feed at troughs at the centers of big galaxies. Deep in the Cosmic Forest, a Black Hole Goldilocks Might Like 2020-05-06T04:00:00Z "There are two competing ideas for the cause of the dimming of the massive red supergiant Betelgeuse," Harper said in an email. After months of dimming, Betelgeuse is bright again. Here’s why 2020-05-13T04:00:00Z Supernova 2023ixf may give some much-needed answers on the matter, among the other particulars of how a red supergiant star collapses and ultimately explodes. Nearby Supernova Gives Unique View of a Dying Star’s Last Days 2023-07-21T04:00:00Z The new images of the star’s surface show not only the fading red supergiant but also how its apparent shape is changing. Daily briefing: Amazon founder Jeff Bezos pledges $10 billion to fight climate change 2020-02-17T05:00:00Z The star that evolved to become SN 1987A began its life as a blue supergiant, evolved to become a red supergiant, and returned to being a blue supergiant at the time it exploded. Astronomy 2016-10-13T00:00:00Z The star is a so-called red supergiant in the last violent stages of its evolution. Just a Fainting Spell? Or Is Betelgeuse About to Blow? 2020-01-09T05:00:00Z The red supergiant is a variable star that brightens and fades unpredictably, but after weeks of dimming, it’s currently at its faintest level so far. Daily briefing: Betelgeuse is going dim, exciting astronomers 2020-01-05T05:00:00Z The red supergiant is not the type of star that produces high energy gamma radiation when it explodes. Is Betelgeuse, one of the sky’s brightest stars, on the brink of a supernova? 2019-12-27T05:00:00Z A map of more than 2,400 supergiant stars reveals how the Milky Way forms an S-shape when seen side-on.Credit: Milky Way map, arrested biologist and missile-treaty withdrawal 2019-08-06T04:00:00Z These stars are called, appropriately enough, giant stars or supergiant stars. Astronomy 2016-10-13T00:00:00Z Even if it doesn’t explode next year, astronomers are bound to learn how a red supergiant behaves and evolves as it approaches its death rattle. Just a Fainting Spell? Or Is Betelgeuse About to Blow? 2020-01-09T05:00:00Z That collision, they said, would initiate a series of do-si-do encounters that would splash streamers of stars and gas across space, and end with the two galaxies merged into a single, supergiant globe of stars. Andromeda Is Coming for Our Milky Way Galaxy, Eventually 2019-02-08T05:00:00Z Both phenomena are common around red supergiant stars, and they fit with models that suggest Betelgeuse is tens of thousands of years away from exploding. Is Betelgeuse, one of the sky’s brightest stars, on the brink of a supernova? 2019-12-27T05:00:00Z The Witch Head Nebula is a very faint molecular gas cloud that is illuminated by supergiant star Rigel, the seventh brightest star of the sky and the brightest star in the constellation of Orion. The year's best astronomy photos 2018-10-28T04:00:00Z In Stars from Adolescence to Old Age, we will look in detail at the evolutionary process that leads to the formation of such giant and supergiant stars. Astronomy 2016-10-13T00:00:00Z Mars’ reddish doppelganger, the supergiant star Antares, loiters underneath Mars now. Jupiter takes the lead in parade of visible planets 2018-02-03T05:00:00Z A new photo of the red "supergiant"Antares is the best ever captured of a star other than the sun, researchers said. Astronomers Capture Best-Ever Image of Alien Star 2017-08-24T04:00:00Z It competes in brightness with Alpha Centauri because it's a supergiant star that intrinsically shines brighter. What to See in Rio’s Night Sky During the Olympics 2016-08-05T04:00:00Z The red supergiant star was 500 times bigger and 20,000 brighter than our Sun. Kepler space telescope catches star explosion - BBC News 2016-03-24T04:00:00Z Over time, massive stars become red supergiants, and lower-mass stars like the Sun become red giants. Astronomy 2016-10-13T00:00:00Z The beginning of the video shows the star, called a red supergiant, just before its nuclear fusion core collapses. Astronomers observe the bright flash from a star's explosion for the first time 2016-03-22T04:00:00Z The brightest star in the image is the supergiant HD 93129Aa, which is one of the brightest in the whole galaxy. Stunning Star Cluster Resembles Glittering Diamonds 2016-01-21T05:00:00Z The brightest members are supergiants shining 50,000 times brighter than our sun. This Week’s Night Sky: A Comet, Meteors, and Clusters at Play 2015-12-07T05:00:00Z When the cores of certain “red supergiant” stars collapse, instead of making supernovae, they may form black holes that simply swallow up the disintegrating star. Astronomers May Have Witnessed 2 Black Hole Births 2015-11-10T05:00:00Z Just how different are these red giants and supergiants from a main-sequence star? Astronomy 2016-10-13T00:00:00Z The company, using drilling rights from the Egyptian government, found what it called a “supergiant” natural gas field. A Gas Discovery in Egypt Threatens to Upend Mideast Energy Diplomacy 2015-10-28T04:00:00Z They researchers also captured another bizarre species - supergiants - on camera. New record depth for deepest fish 2014-12-18T05:00:00Z But they don’t want to, because it would be expensive to ramp up, and the margins are much slimmer than what they derive from supergiant fields like Ghawar and Manifa. Why Harold Hamm Isn't Worried About Plunging Oil Prices 2014-10-20T04:00:00Z This phenomenon may even befall Betelgeuse — the bright, red supergiant in the Orion Orion constellation — that is expected to end its life as a supernova. Betelgeuse May First Erupt As 'Supernova Impostor' 2014-08-28T04:00:00Z Betelgeuse is a mere 10 million years old, which is relatively young compared with our Sun’s 4.5 billion years, but it is already nearing its death throes as a red supergiant. Astronomy 2016-10-13T00:00:00Z A Cepheid is a yellow supergiant—a star as warm as the sun but much more luminous—that periodically pulsates, expanding and contracting so that its light waxes and wanes. A Stellar Discovery on the Milky Way's Far Side 2014-06-02T04:00:00Z A Cepheid is a yellow supergiant — a star as warm as the sun but much more luminous — that periodically pulsates, expanding and contracting so that its light waxes and wanes. A stellar discovery on the Milky Way's far side 2014-06-01T04:00:00Z A Cepheid is a yellow supergiant star that periodically brightens and dims as it expands and contracts. The Galaxy Collision Next Door 2013-11-22T17:15:00.440Z But many researchers found that the profile of the explosion did not fit what would be expected from the collapse of a supergiant. A Supergiant Star Goes Missing, and a Supernova Mystery Is Solved 2013-08-22T18:15:01.003Z Under the right circumstances, stars can exchange material, especially during the stages when one of them swells up into a giant or supergiant, or has a strong wind. Astronomy 2016-10-13T00:00:00Z They might emanate from the death throes of supergiant stars, astronomers proposed at a meeting in Nashville, Tennessee, on 16 April. Seven days: 19–25 April 2013 2013-04-24T17:20:17.873Z "Prior to SN 1987A theory told us that blue supergiant stars did not explode—SN 1987A came as something of a surprise," Gardner says. Leading Light: What Would Faster-Than-Light Neutrinos Mean for Physics? 2011-10-13T10:45:03.010Z The Leviathan field appeared to be a supergiant, according to three-dimensional seismic studies, with almost twice the gas reserves of Tamar. Big Gas Find Sparks a Frenzy in Israel 2010-12-30T04:12:49Z “We fully expected the yellow supergiant to still be there in these images this year.” A Supergiant Star Goes Missing, and a Supernova Mystery Is Solved 2013-08-22T18:15:01.003Z Before the star that became SN 1987A exploded, it evolved from a red supergiant to a blue supergiant while remaining at the same luminosity. Astronomy 2016-10-13T00:00:00Z Two of its inaugural members, the already bloated supergiant that is Manchester United and the feisty counter-punchers of Oldham Athletic are playing for a place in the FA Cup final. Early days in Oldham Athletic's bid to recapture the glory years 2010-08-26T11:51:00Z He won a contract to boost output from a supergiant oil field in Iraq, where BP had worked decades before. Oil spill crisis a setback for BP and its chief executive 2010-05-03T04:00:00Z But the country with the most remarkable record is that other supergiant, India. Gendercide: The worldwide war on baby girls 2010-03-04T11:17:00Z As the bright blemish of the supernova remnant continues to fade, the Whirlpool will return to its pre-2011 appearance—minus one supergiant star. A Supergiant Star Goes Missing, and a Supernova Mystery Is Solved 2013-08-22T18:15:01.003Z Unfortunately, our knowledge is reasonably complete only for stars within 10 to 20 light-years of the Sun, among which there are no giants or supergiants. Astronomy 2016-10-13T00:00:00Z In industry lingo, Rumaila is a "supergiant"—a 50-mile-long deposit of sweet crude with estimated reserves of 16 billion barrels, whose output may someday rank second only to Saudi Arabia's vast Ghawar field. 2010-01-21T14:00:00Z Note the contrast in color between the bright yellow supergiant and the hot blue main-sequence stars. Astronomy 2016-10-13T00:00:00Z Eventually, as stars age, they evolve away from the main sequence to become red giants or supergiants. Astronomy 2016-10-13T00:00:00Z Relative to the Sun, this supergiant has a much larger radius, a much lower average density, a cooler surface, and a much hotter core. Astronomy 2016-10-13T00:00:00Z Show where cool supergiants, white dwarfs, the Sun, and main- sequence stars are found. Astronomy 2016-10-13T00:00:00Z The solid black lines show the predicted evolution from the main sequence through the red giant or supergiant stage on the H–R diagram. Astronomy 2016-10-13T00:00:00Z With a mass at least 100 times that of the Sun, the hot supergiant Eta Carinae is one of the most massive stars known. Astronomy 2016-10-13T00:00:00Z Why are there far fewer stars in the giant and supergiant region? Astronomy 2016-10-13T00:00:00Z These stars must be giants or supergiants, the stars of huge diameter we discussed earlier. Astronomy 2016-10-13T00:00:00Z If we look in detail at the spectrum of a star, we can determine whether it is a main-sequence star, a giant, or a supergiant. Astronomy 2016-10-13T00:00:00Z The cool supergiants in the upper corner of the H–R diagram are as much as 10,000 times as luminous as the Sun. Astronomy 2016-10-13T00:00:00Z Here you see how small the Sun looks in comparison to one of the largest known stars: VY Canis Majoris, a supergiant. Astronomy 2016-10-13T00:00:00Z If you were to compare three stars with the same surface temperature, with one star being a giant, another a supergiant, and the third a main-sequence star, how would their radii compare to one another? Astronomy 2016-10-13T00:00:00Z What about the other stars on the H–R diagram—the giants and supergiants, and the white dwarfs? Astronomy 2016-10-13T00:00:00Z But if there are subtle differences between the solar spectrum and the spectrum of the distant star, then the distant star may be a giant or even a supergiant. Astronomy 2016-10-13T00:00:00Z The cool supergiant star Antares can be seen as a big, reddish patch in the lower-left part of the picture. Astronomy 2016-10-13T00:00:00Z At one extreme, the central bulge is large and luminous, the arms are faint and tightly coiled, and bright emission nebulae and supergiant stars are inconspicuous. Astronomy 2016-10-13T00:00:00Z |
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