Ranging from peaceful visits to devastating wars, humanity's first encounters with extraterrestrial life is one of the most ...

Add Yahoo as a preferred source to see more of our stories on Google. The great physicist Enrico Fermi first posed the challenging question over half a century ago, wondering why we appear to be alone ...

You've seen it in the movies. Contact with aliens often ends badly for humans. So why do we keep trying to get in touch with them? We don't even know if aliens really exist. But if aliens do exist, ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...