When the interstellar traveler 'Oumuamua sped through our solar system in 2017, it left behind a lot of unanswered questions and a lot of scientific debate. Avi Loeb, an astrophysicist at Harvard, is ...

I/ATLAS interstellar comet, first photographed from Mars orbit in October 2025, carries water ice with deuterium levels more ...

Our old pal, Comet 3I/ATLAS, is back in the news. The comet we breathlessly covered last year as scientists were mystified by this interstellar traveler, some of whom entertained the idea that it ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...

Interstellar comet 3I/ATLAS contains exceptionally high levels of methanol, suggesting it formed under conditions very different from those that shaped most comets in our solar system. ALMA also ...

Hubble has captured evidence of extraordinary jet activity from the interstellar comet 3I/ATLAS, which challenges established models of cometary physics and raises new questions about the nature of ...

Add Yahoo as a preferred source to see more of our stories on Google. Strange isotope signals in 3I/ATLAS suggest the interstellar comet formed around an ancient, metal-poor star. (CREDIT: Wikimedia / ...

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The most sensational story of the year for astronomers has been the discovery of the comet 3I/ATLAS, which was first observed on July 1, 2025 by NASA's Asteroid Terrestrial-impact Last Alert System ...

For those of us who spent the last few months glancing nervously at the heavens, wondering if our latest celestial visitor was a harbinger of something more sinister, there is good news. The ...

3I/ATLAS is only the third interstellar object ever observed traveling through the solar system, following 1I/'Oumuamua in 2017 and 2I/Borisov in 2019. Each encounter has sparked fascination—and ...