Tag: Comets
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What’s Up: July 2026 Skywatching Tips from NASA
A predawn Moon-and-planets meetup, a returning comet, a great chance to see the Milky Way, and Saturn’s rings at a new angle. Skywatching Highlights Transcript An early morning hangout with the Moon and planets, a comet swings by, prime time…
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NASA’s Webb Finds Clues to Ancient, Distant Origin of Comet 3I/ATLAS
As interstellar comet 3I/ATLAS began moving away from the Sun in December 2025, astronomers took the opportunity to turn NASA’s powerful James Webb Space Telescope in its direction and capture detailed measurements of its chemical components. The comet was freshly…
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NASA’s Hubble Detects First-Ever Spin Reversal of Tiny Comet
Astronomers using NASA’s Hubble Space Telescope have found evidence that the spinning of a small comet slowed and then reversed its direction of rotation, offering a dramatic example of how volatile activity can affect the spin and physical evolution of…
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How Open NASA Data on Comet 3I/ATLAS Will Power Tomorrow’s Discoveries
The interstellar comet 3I/ATLAS will soon leave our solar system, never to return, but the observations of the comet will live on in NASA’s public data archives. More than a dozen NASA science missions turned their instruments to observe the…
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NASA’s Hubble Unexpectedly Catches Comet Breaking Up
In a happy twist of fate, NASA’s Hubble Space Telescope just witnessed a comet in the act of breaking apart. The chance of that happening while Hubble watched is extraordinarily minuscule. The findings published Wednesday in the journal Icarus. The…
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Helio and You: Comets, the Sun, and You
This article shows educators how comets help us learn about the Sun and Space Weather. Connected to educational resources that help K-12+ teachers explain solar wind and space science concepts in simple, engaging ways for students.
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View Interstellar Comet 3I/ATLAS Through NASA’s Multiple Lenses
This article was updated to include the full range of dates from the SOHO image. Lee esta historia en español aquí. NASA is in the midst of an unprecedented solar system-wide observation campaign, turning its spacecraft and space telescopes to…
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As NASA Missions Study Interstellar Comet, Hubble Makes Size Estimate
A team of astronomers has taken the sharpest-ever picture of the unexpected interstellar comet 3I/ATLAS using the crisp vision of NASA’s Hubble Space Telescope. Hubble is one of many missions across NASA’s fleet of space telescopes slated to observe this…
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NASA-Led Team Links Comet Water to Earth’s Oceans
Scientists find that cometary dust affects interpretation of spacecraft measurements, reopening the case for comets like 67P as potential sources of water for early Earth. Researchers have found that water on Comet 67P/Churyumov–Gerasimenko has a similar molecular signature to the…
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ESA/NASA’s SOHO Spies Bright Comet Making Debut in Evening Sky
The Solar and Heliospheric Observatory (SOHO) has captured images of the second-brightest comet to ever pass through its field of view, comet C/2023 A3 Tsuchinshan-ATLAS.