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#planetary-science

Venus' mysterious haze is actually cosmic dust

Ars Technica ↗ · yesterday Cached

研究人员利用微物理模型首次解释了金星低层神秘霾的成因:陨石烧蚀留下的宇宙尘埃与硫酸相互作用后形成霾,而非此前猜测的火山灰或表面尘埃。

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#planetary-science

Dinosaur-killing impact crater might have been teeming with life

Ars Technica ↗ · 2d ago Cached

研究人员发现,6600万年前撞击地球并导致恐龙灭绝的希克苏鲁伯小行星,在尤卡坦半岛海底形成了持续至少500万至800万年的热液系统,比此前估计的时间长得多,可能为早期生命的繁衍提供了理想环境。

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#planetary-science

What a Massive New 728-Foot-Wide Crater Means for Future Moon Bases

Hacker News Top ↗ · 3d ago

Scientists have identified a massive new 728-foot-wide crater on the Moon, raising questions about surface instability and its implications for planning future lunar bases and human missions.

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#planetary-science

A Gravitational Battle Within the Earth Is Changing the Length of Days

Wired ↗ · 2026-09-26 Cached

A study published in Nature suggests that gravitational forces between Earth's inner core and mantle cause subtle changes in the planet's rotation, leading to variations in day length.

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Promising discoveries about the potential for life on one of Saturn’s icy moons

Hacker News Top ↗ · 2026-09-26 Cached

New studies published in Science Advances reveal that Enceladus's ocean may be more conducive to life than previously thought, and future spacecraft could detect life more easily.

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Venus May Have Devoured Its Moon

Wired ↗ · 2026-09-24 Cached

A recent study suggests that Venus may have lost its moon due to gravitational forces and slow rotation, supported by computer simulations rather than a catastrophic event.

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'Fingerprints' inside the Sun could reveal if it once swallowed a planet

Hacker News Top ↗ · 2026-09-13 Cached

A new study suggests that the Sun may have engulfed a super-Earth early in its history, leaving detectable chemical fingerprints that could explain discrepancies between solar models and observations.

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What the Heck? Another Perfect Geometric Shape Has Been Detected on Saturn

Wired ↗ · 2026-09-04 Cached

Astronomers have detected a 10-sided polygonal atmospheric structure on Saturn near its south pole, observed by the Hubble Space Telescope and published in Science Advances.

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Astronomers Detect a 10-Sided Structure in Saturn's Atmosphere

Hacker News Top ↗ · 2026-09-03 Cached

Astronomers have discovered a 10-sided polygonal structure in Saturn's southern atmosphere, similar to the known hexagon at the north pole, indicating that such polygonal waves can form in both polar regions.

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High-Res Photo Shows Sand-Capped Butte Rising from Mars Plain of Polygons

Hacker News Top ↗ · 2026-08-06 Cached

NASA's Curiosity Rover captures a high-resolution panoramic photo of a sand-capped butte nicknamed 'Miraflores' rising from a Martian plain covered in ancient polygonal seabed formations, offering new clues about the Red Planet's history.

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NASA’s Curiosity rover found a ‘sea of polygons’ on Mars

The Verge ↗ · 2026-07-30 Cached

NASA's Curiosity rover discovered a vast field of honeycomb-shaped polygonal fractures on Mars, suggesting past water activity in the Valle Grande region.

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Titan's Resources and Their Utilization

Hacker News Top ↗ · 2026-07-06 Cached

This paper examines the resources available on Saturn's moon Titan, including hydrocarbons, nitrogen, and water ice, and discusses their potential for in-situ utilization to support long-duration missions or habitats, comparing with lunar and Martian resource potential.

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Where Did Earth Get Its Oceans? Maybe It Made Them Itself

Hacker News Top ↗ · 2026-06-12 Cached

A new hypothesis suggests Earth may have generated its own water from hydrogen in magma oceans, challenging traditional theories that water came from comets or asteroids.

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After 11 years at Mars, NASA's MAVEN spacecraft went out with a whisper

Ars Technica ↗ · 2026-06-04 Cached

NASA's MAVEN spacecraft, which studied the Martian atmosphere for 11 years, has been officially declared lost after losing contact in December 2025 when it disappeared behind Mars during a routine occultation. Telemetry fragments recovered later showed the spacecraft was spinning at 2.7 RPM, suggesting an unrecoverable power failure.

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A Probe Took Incredible Pictures of Mars on Its Way to a Far-Off Asteroid

Wired ↗ · 2026-05-25 Cached

NASA's Psyche probe performed a flyby of Mars, using gravity assist to boost its speed toward the asteroid Psyche. The spacecraft captured detailed images of the Martian surface and calibrated its instruments.

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