搜索结果: 1-14 共查到“理学 Astronomers”相关记录14条 . 查询时间(0.171 秒)
In a first, astronomers spot a star swallowing a planet（图）
恒星 行星 天文物理学 天文观测
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2023/6/9
As a star runs out of fuel, it will billow out to a million times its original size, engulfing any matter — and planets — in its wake. Scientists have observed hints of stars just before, and shortly ...
Astronomers detect the closest example yet of a black hole devouring a star（图）
黑洞 吞噬恒星 红外天文学
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2023/6/9
Once every 10,000 years or so, the center of a galaxy lights up as its supermassive black hole rips apart a passing star. This “tidal disruption event” happens in a literal flash, as the central black...
Astronomers discover metal-rich galaxies in early universe
宇宙 富含金属 星系
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2023/5/17
Scanning the first images of a well-known early galaxy taken by NASA’s James Webb Space Telescope (JWST), Cornell astronomers were intrigued to see a blob of light near its outer edge.
Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say（图）
黑洞生长 超大质量黑洞 兹威基瞬态设施 天文观测
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2023/6/9
Earlier this year, astronomers were keeping tabs on data from the Zwicky Transient Facility, an all-sky survey based at the Palomar Observatory in California, when they detected an extraordinary flash...
Astronomers find a “cataclysmic” pair of stars with the shortest orbit yet（图）
“灾难性”恒星 恒星 双星系统
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2023/6/9
Nearly half the stars in our galaxy are solitary like the sun. The other half comprises stars that circle other stars, in pairs and multiples, with orbits so tight that some stellar systems could fit ...
Astronomers see carbon dioxide on planet outside solar system for first time（图）
詹姆斯韦伯 太空望远镜 系外行星 大气
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2023/6/25
Scientists using NASA’s James Webb Space Telescope have captured definitive evidence of carbon dioxide in the atmosphere of a planet beyond our solar system.
Cornell astronomers cheer new space telescope’s first images（图）
康奈尔大学 詹姆斯韦伯太空望远镜 射电天文学
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2023/5/22
As praise pours in for the images released July 12 from NASA’s new James Webb Space Telescope (JWST) – the next-generation telescope able to peer deeper into the cosmos – Cornell astronomy faculty who...
Astronomers snap first-ever image of supermassive black hole Sagittarius A*（图）
超大质量黑洞 人马座A* 银河系
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2023/6/9
Black holes are invisible by nature. Their pull is inescapable, forever trapping any light that falls into their gravitational abyss. But just beyond a black hole’s point of no return, light persists,...
Astronomers discover a rare “black widow” binary, with the shortest orbit yet（图）
“黑寡妇”双星 恒星 伴星环 银河系
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2023/6/9
The flashing of a nearby star has drawn MIT astronomers to a new and mysterious system 3,000 light years from Earth. The stellar oddity appears to be a new “black widow binary” — a rapidly spinning ne...
Chasing data: Astronomers race to explore ancient galaxies（图）
追逐数据 天文学 古代星系
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2023/5/22
On the evening of Dec. 12, 2021, Cornell astronomers Gordon Stacey and Thomas Nikola were dangerously short on time. They’d been awake for nearly 24 hours, with another all-nighter ahead of them.
Astronomers seek gravitational waves with renewed NSF grant
NSF 引力波 双星超大质量黑洞
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2023/5/24
The National Science Foundation (NSF) has renewed a Physics Frontiers Center grant to the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) consortium, giving Cornell astronomy r...
Amateur astronomers help keep tabs on White Dwarf overdue for massive starquake
White Dwarf
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2007/5/23
22 May 2007，Researchers at the University of Warwick have enlisted a world wide team of amateur/semi-professional astronomers to keep watch on one of the fastest spinning white dwarf stars ever found....
European astronomers create largest-ever catalogue of gamma-ray sources in the universe（图）
gamma-ray
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2007/3/15
23 February 2007，Using data from the European Space Agency's latest orbiting gamma-ray observatory, Integral, a European team of astronomers led by Dr Antony Bird of the University of Southampton (UK)...
Astronomers Confirm Asteroid KW4 is No Threat to Earth -- at Least for a Thousand Years（图）
Asteroid KW4 dynamics
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2006/12/4
November 16, 2006，The Arecibo Observatory's powerful radar -- a keen eye aimed into the sky -- has made the most detailed observations ever of a binary near-Earth asteroid. This information provides c...