Are we alone in the universe? Indeed, it could not be a question that has captured the human imagination more than this one, perhaps as long as human beings have walked on this earth. While scenes of ...

What would it mean for humans if there were another species out there, and how big is the challenge when the human species is just a speck among others in space? The bigger problems and challenges ...

Alien life could exist on hot, rocky planets, sustained not by water but by a type of salty fluid, new research suggests. Reading time 3 minutes The search for alien life usually hinges on finding the ...