6 billion years old and home to more than 100 billion stars. This reality suggests there is likely a mind-boggling number of ...

In his classic science fiction novel Contact, Carl Sagan remarked, “The universe is a pretty big place. If it's just us, seems like an awful waste of space.” Physicist Enrico Fermi is credited with ...

For centuries, great thinkers have pondered why, given the hundreds of billions of planets in the galaxy, we have seen no compelling signs of intelligent life beyond Earth. Now, scientists are mulling ...

(via minutephysics) This video explains how the Fermi Paradox - the fact that aliens should mathematically be abundant in the universe and yet we haven't heard from any - actually makes sense when you ...