Astronomer Avi Loeb gives his thoughts on the prospect of finding signs of intelligent life beyond our Solar System.

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

Take a drive to the CIA’s Area 51 – a route with more UFO sightings and unexplained mysteries than anywhere else on Earth ...

Looking so far into the future is so difficult as to be a fool's errand. But it's fun!

For decades, humanity has searched the universe for signs of alien life — but some scientists warn that finding it may come with terrifying consequences. This video explores NASA’s Voyager missions, ...

A new Mars Rover image captured by NASA's Curiosity mission has reignited debate over whether unusual formations on the Red ...