The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

Could intelligent alien civilizations really exist somewhere beyond Earth? As advanced telescopes continue discovering new potentially habitable worlds every year, that possibility seems more ...

Alien life beyond Earth: After sorting through more than 6,000 known exoplanets, astronomers have picked out 45 rocky worlds that look like the best places to hunt for signs of alien life. It’s a big ...