If C/2026 A1 (MAPS) survives its close encounter with the sun, it could blaze brightly enough to be seen from Earth.

New evidence suggests that the famous interstellar traveler may be so old that its home system no longer exists.

I/ATLAS may be more than the strangest space object astronomers have observed within our solar system—it could also be one of ...

A new analysis of archival Hubble Space Telescope photos reveals that a peculiar comet slowed its spin before fully reversing ...

Gases jetting out of Comet 41P/Tuttle-Giacobini-Kresák may have caused it to reverse its spin in 2017, possibly leading to ...

The interstellar comet 3I/ATLAS, recently discovered in our solar system, could be nearly 12 billion years old. Its ...

NASA’s Hubble Space Telescope stumbled upon one of astronomy’s rarest sights: a comet tearing itself apart in real time. The ...

NASA associate administrator Amit Kshatriya and associate administrator of NASA Science Dr. Nicky Fox explain that "all evidence points" that is an interstellar comet and reveal a new image from the ...

The interstellar comet 3I/ATLAS contains water and carbon molecules at levels never before seen in our solar system. This suggests that it formed around an alien star radically different from and much ...

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Comet 3I/Atlas is now heading out of the solar system and into interstellar space, but scientists are still analyzing the data it left behind as it passed through our cosmic neighborhood. A new study, ...

NASA's DART mission didn’t just change the orbit of Dimorphos, the asteroid it hit. It changed the orbit of the larger Didymos around the sun.