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 ...

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

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.

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

A new scientific paper is drawing attention because it puts forward an unexpected idea about a space object called 3I-ATLAS. Some scientists now question whether this object, which came into our solar ...

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