An interstellar comet spotted by NASA is headed for our solar system, showing up near Earth later this year, but it's another ...

Confirmed as an alien comet, new observations have given us a much better idea of how large this interstellar object actually ...

Scientists propose that NASA's Juno probe could intercept the recently discovered interstellar comet, 3I/ATLAS, providing a close examination of this enigmatic celestial object.

An aging spacecraft more than a decade into its mission may soon undertake one of the most ambitious maneuvers in modern ...

The most striking science photos of the week: including the Perseid meteor shower and glowing underwater wonders.

James Webb Space Telescope discovers 300 mysteriously luminous objects, sparking debate on whether they are galaxies or something else ...

Humans could come into contact with aliens in around 110 days – according to one Harvard professor, who has been closely ...