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Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
Early findings from HERA telescope promise deeper understanding of the cosmic dawn（图）
HERA望远镜 宇宙黎明 恒星
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2023/6/9
All through history, humans have created and shared stories that ponder the creation of stars — what they are and how the first stars came to be. Now, with new results from the Hydrogen Epoch of Reion...
Back in days of great floods（图）
火星 水系统 行星物理学
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2023/6/21
You wouldn’t know it to look at Mars now, but rushing waters that crested banks had a hand in sculpting the face of the bone-dry red planet.
Research done at Cornell has uncovered from gravitation wave data the first potential signs of spin-orbit resonances in binary black holes, a step toward understanding the mechanisms of supernovas and...
Could acid-neutralizing life-forms make habitable pockets in Venus’ clouds?（图）
酸中和 金星云 生命形式
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2023/6/8
It’s hard to imagine a more inhospitable world than our closest planetary neighbor. With an atmosphere thick with carbon dioxide, and a surface hot enough to melt lead, Venus is a scorched and suffoca...
Touching the sun（图）
太阳 天体物理学 帕克太阳探测器
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2023/6/21
Aspacecraft launched by NASA has done what was once thought impossible. On April 28, the Parker Solar Probe successfully entered the corona of the sun — an extreme environment that’s roughly 2 million...
Getting the asteroid before it gets us（图）
小行星 天体物理学 双小行星重定向测试
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2023/6/25
Last week, the stuff of Hollywood blockbusters became a reality when NASA launched its Double Asteroid Redirection Test (DART), a small spacecraft that will smash into an asteroid sometime in Septembe...
After gazing at Jupiter’s Great Red Spot and the planet’s gaseous cloudy realm, NASA’s Juno spacecraft and its microwave radiometer have provided humanity’s first 3D, turbulent sense of what lies far ...
Tantalizing transit（图）
系外行星 银河系 系外恒星
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2023/6/21
Signs of a planet transiting a star outside of the Milky Way galaxy may have been detected for the first time. This intriguing result, using NASA’s Chandra X-ray Observatory, opens up a new window to ...
What seemed a cosmic trickle almost a decade ago now appears as a rapid-fire barrage from across the universe.
When it comes to directly imaging Earth-like exoplanets orbiting faraway stars, seeing isn’t always believing.
Scientists last autumn revealed that the gas phosphine was found in trace amounts in Venus’ upper atmosphere. That discovery promised the slim possibility that phosphine serves as a biological signatu...
Even the most extreme objects in the universe – including black holes – must obey certain rules.
Scientists at Cornell and the American Museum of Natural History have identified 2,034 nearby star-systems – within the small cosmic distance of 326 light-years – that could find Earth merely by watch...
Charting the universe（图）
宇宙图 天体物理学 暗能量光谱仪器
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2023/6/25
In 1983, astrophysicists at the Center for Astrophysics | Harvard & Smithsonian (CfA) released a cosmic map using 2,400 galaxies. Now, CfA scientists are aiming to map 30 million.