Billions Quote by Buzz Aldrin

The reality is that we know that this universe, that our galaxy, has billions of stars. We know that stars have planets. So the…

— Mae Jemison

Mathematically speaking, it seems impossible that there isn't life out our planet. If you flick on the news, it certainly seems like we have…

— Ryan Reynolds

I should say we know that there are many, many other Earths out there. We're almost certain that there will be upwards of a…

— Paul Davies

The universe is very big - there's about 100,000 million galaxies in the universe, so that means an awful lot of stars. And some…

— Jocelyn Bell Burnell

I think more and more scientists are becoming convinced that it's very likely that life forms of some kind exist all around the universe…

— Ron Howard

We think that life develops spontaneously on Earth, so it must be possible for life to develop on suitable planets elsewhere in the universe.…

— Stephen Hawking

Given the millions of billions of Earth-like planets, life elsewhere in the Universe without a doubt, does exist. In the vastness of the Universe…

— Albert Einstein

It's overwhelmingly likely that life exists on other planets.

— Paul Horowitz

I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on…

— Stephen Hawking

We have never denied that it is possible, indeed probable, that other forms of life, even intelligent life, exist in the universe. But this…

— Paul Kurtz

I do believe there's life other than on our planet.

— Forest Whitaker

Obviously there's some kind of life elsewhere. I don't know whether it would look like anything we recognise but I do believe in aliens.

— Ant McPartlin