As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

Steven Spielberg brought his flair for extraterrestrial invasions to the sci-fi series Falling Skies, which is now on Netflix ...

Dystopian stories often feature monsters, aliens, or robots as the bad guys. But some of the scariest shows reveal a darker ...

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...