Stephen Hawking Quotes

This planet seems to be in such sorry shape. And I can't ever think about the rest of the universe without coming back home and thinking what the implications for life here would be if we were to really have some definitive proof of extraterrestrial life.

If there is life out there that's so much more advanced than we are, and they know either how to travel great distances in short amounts of time, or they're able to come from a parallel universe into ours, why don't they just come and show themselves?

Statistically it's a certainty there are hugely advanced civilizations, intelligences, life forms out there. I believe they're so advanced they're even doing interstellar travel. I believe it's possible they even came here.

It is surely unreasonable to credit that only one small star in the immensity of the universe is capable of developing and supporting intelligent life. But we shall not get to them and they will not come to us.

It's very exciting that people could actually live on another planet.

Maybe the search for life shouldn't restrict attention to planets like Earth. Science fiction writers have other ideas: balloon-like creatures floating in the dense atmospheres of planets such as Jupiter, swarms of intelligent insects, nano-scale robots and more.

I actually think the chances that we'll find E.T. are pretty good.

Will searching for distant messages work? Is there intelligent life out there? The SETI effort is worth continuing, but our common-sense beacons approach seems more likely to answer those questions.

With 'Extinction Machine,' I wanted to start some conversations about whether we're alone in the universe and what that might mean.

That would be such a life-changing thing, for us all to know that there are other beings out there who we could potentially communicate with, or maybe we are listening to a signal that they transmitted hundreds of millennia ago.

First and foremost, The Quiet Invasion is a first contact story. What would we do if we actually found evidence of alien life out there? It's also about politics.

I did not want to write a story about the invasion of Earth, so I had to create a race capable of living nearby, which meant to either on the Moon, on Mars, or on Venus. I picked Venus.

If our species is to survive, our future will probably require outposts beyond our own planet.

It's hardly a secret that I'm skeptical of declarations that the aliens are out and about on our planet. Still, I try to answer every one of these mails and phone calls because, after all, it's not a violation of physics to travel from one star system to another.

Space exploration promised us alien life, lucrative planetary mining, and fabulous lunar colonies. News flash, ladies and gents: Space is nearly empty. It's a sterile vacuum, filled mostly with the junk we put up there.

When we discover New Earth - a planet we could call home - the question of the 'plurality of worlds' will come front and center, reminding us yet again that we are not the center of the universe.

Clearly, unless thinking beings inevitably wipe themselves out soon after developing technology, extraterrestrial intelligence could often be millions or billions of years in advance of us. We're the galaxy's noodling newbies.

The more we know about life out there the easier it will be to improve life down here.

There's so much interest and curiosity about alien life, interstellar travel. It's always in the news.

I think there's all kinds of life out there, including intelligent life, but the reason we haven't found each other is because of vast distances.

I do not believe that anyone from outer space has ever visited the Earth.

We send messages all the time, free of charge. There's a big shell out there now, 80 light-years around us. A civilization only a little more advanced than we are can pick those things up.

Galactic plankton is undoubtedly out there, but it's statistically highly likely there's also another intelligent civilisation out there somewhere. Unfortunately, the distances and time differences are so great, communication might remain impossible.

Astrobiology is a great point of contact for science outreach. The public is naturally interested in extra-terrestrial life. Astrobiology provides an accessible point of access that leads to deeper questions.

Exploration of closer planets will continue. Only after he exhausts all the resources here on earth will man go further ahead, which is when interplanetary travel may take place.