But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, ...

This quiz invites you to chase comets through time and space, from ancient omens to modern scientific marvels.

A telescope in Chile recently glimpsed 3I/ATLAS' glowing tail, which observations reveal has grown as the interstellar object ...

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet ...

Comet 3I/ATLAS, an interstellar visitor, is exhibiting a potential color shift, possibly turning green as it approaches the ...

The interstellar comet 3I/ATLAS, a rare visitor from outside the Solar System, might have been spewing gases for months ...

Under the partnership, 1Password and Comet users can install the 1Password browser extension to log in, autofill credentials ...

Astrophysicist Avi Loeb, the former chairman of Harvard's Department of Astronomy and current head of Harvard's Galileo Project, which searches for ...

The comet, which poses no risk to Earth, first burst onto the scene July 1, spotted by NASA’s ATLAS survey telescope in Chile ...

Astronomers and students working together through a unique educational initiative have obtained a striking new image of the ...