Space Quotes by Stephen Hawking

The real challenge is to work out what aliens might actually be like.

— Stephen Hawking

A zero-gravity flight is a first step toward space travel.

— Stephen Hawking

Perhaps one day I will go into space.

— Stephen Hawking

Time can behave like another direction in space under extreme conditions.

— Stephen Hawking

I think the human race has no future if it doesn't go into space.

— Stephen Hawking

I think the human race doesn't have a future if it doesn't go into space.

— Stephen Hawking

It is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!

— Stephen Hawking

If the government is covering up knowledge of aliens, they are doing a better job of it than they do at anything…

— Stephen Hawking

I want to encourage public interest in space. I have never let my condition stop me. You only live once.

— Stephen Hawking

I am discounting the reports of UFOs. Why would they appear only to cranks and weirdos?

— Stephen Hawking

I think it quite likely that we are the only civilization within several hundred light years; otherwise we would have heard radio…

— Stephen Hawking

Of course it is possible that UFO's really do contain aliens as many people believe, and the government is hushing it up

— Stephen Hawking

The fastest manned vehicle in history was Apollo 10. It reached 25,000 mph.

— Stephen Hawking

“In space, no one can you scream; an in a black hole, no one can see you disappear”

— Stephen Hawking

Sooner or later disasters such as an asteroid collision or a nuclear war could wipe us all out, But once we spread…

— Stephen Hawking

I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents…

— Stephen Hawking

In real time, the universe has a beginning and an end at singularities that form a boundary to space-time and at which…

— Stephen Hawking

I believe that the long-term future of the human race must be space and that it represents an important life insurance for…

— Stephen Hawking

[On President Bush's plan to get to Mars in 10 years] Stupid. Robots would do a better job and be much cheaper…

— Stephen Hawking

Because imaginary time behaves like another direction in space, histories in imaginary time can be closed surfaces, like the surface of the…

— Stephen Hawking

“Today will still yearn to know why we are here and where we came from. Humanity's deepest desire for knowledge is justification…

— Stephen Hawking

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

— Stephen Hawking

If we can avoid disaster for the next two centuries, our species should be safe as we spread into space. If we…

— Stephen Hawking

Please join me in applauding the ESA - European Space Agency’s historic efforts with the Rosetta Mission and landing a spacecraft on…

— Stephen Hawking

Gravity is so strong that space is bent round onto itself, making it rather like the surface of the earth. If one…

— Stephen Hawking

We only have to look at ourselves to see how intelligent life might develop into something we wouldnt want to meet. I…

— Stephen Hawking

Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change…

— Stephen Hawking

One can see from space how the human race has changed the Earth. Nearly all of the available land has been cleared…

— Stephen Hawking

“time and space are intertwined. It is something like adding a fourth direction of future/past to the usual left/right, forward/backward, and up/down.…

— Stephen Hawking

I think the human race doesn't have a future if we don't go into space. We need to expand our horizons beyond…

— Stephen Hawking

I don't think the human race will survive the next thousand years, unless we spread into space.

— Stephen Hawking

I think we have a good chance of surviving long enough to colonize the solar system.

— Stephen Hawking

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

— Stephen Hawking

I have wanted to fly into space for many years, but never imagined it would really be feasible.

— Stephen Hawking

We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.

— Stephen Hawking

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

— Stephen Hawking

If we want to travel into the future, we just need to go fast. Really fast. And I think the only way…

— Stephen Hawking

Before 1915, space and time were thought of as a fixed arena in which events took place, but which was not affected…

— Stephen Hawking

The idea that we are alone in the universe seems to me completely implausible and arrogant, considering the number of planets and…

— Stephen Hawking

I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history…

— Stephen Hawking