An unusual visitor has entered our cosmic neighborhood. Scientists call these objects interstellar objects, or ISOs. Unlike ...

Planets that once lived only in pulp novels and movie concept art are now turning up in real data. Astronomers are not just finding distant worlds, they are cataloguing places with molten surfaces, ...

With 'Disclosure Day,' the director returns to a longtime preoccupation. Two Times staffers explore his ongoing fascination ...

Scientists have updated global guidelines for announcing possible evidence of intelligent alien life, aiming to prevent misinformation, panic and confusion in the age of social media and AI.

From the first photographer star to the discovery of alien worlds, these night sky targets mark some of astronomy's greatest firsts. When you purchase through links on our site, we may earn an ...

The science fiction genre is home to many fascinating, terrifying, and breathtaking worlds that stretch the limits of imagination, from the hive of scum and villainy that is Tatooine in Star Wars to ...