A NASA astronaut has revealed the one book he thinks most accurately describes aliens.

Astronaut Stan Love has exclusively discussed aliens with The U.S. Sun and explained why he thinks we haven't found them yet.

He told The U.S. Sun: "There is one science fiction novel, that I think gets this right, which is Solaris by Stanisław Lem and I think that handles extraterrestrial intelligence better than any other science fiction work I’ve seen.

"It’s absolutely incomprehensible to people and people are incomprehensible to it.

He added: "Read it. Don’t see the movies. The movies are about people, they’re not about the aliens, the book is about the aliens."

Love is a 57-year-old American scientist and astronaut who joined Nasa in 1998 and went on his first spaceflight on Space Shuttle Atlantis in 2008.

He's full of shit. We have found them. To read more, click here.