To our knowledge, life exists on only one planet, Earth. If something bad happens, it's gone. I think we should establish life… — Elon Musk Copy Share Image
There are so many benefits to be derived from space exploration and exploitation; why not take what seems to me the only… — Isaac Asimov Copy Share Image
We'll get to the details of what's around here, but it looks like a collection of just about every variety of shape… — Buzz Aldrin Copy Share Image
The starry heaven, though it occurs so very frequently to our view, never fails to excite an idea of grandeur. This cannot… — Edmund Burke Copy Share Image
I suspect there could be life and intelligence out there in forms we can't conceive. Just as a chimpanzee can't understand quantum… — Martin Rees Copy Share Image
“We tend to be unaware that stars rise and set at all. This is not entirely due to our living in cities… — Robert K.G. Temple Copy Share Image
Even if we never reach the stars by our own efforts, in the millions of years that lie ahead it is almost… — Arthur C. Clarke Copy Share Image
I love to revel in philosophical matters-especially astronomy. I study astronomy more than any other foolishness there is. I am a perfect… — Mark Twain Copy Share Image
Feeling weightless... it's so many things together. A feeling of pride, of healthy solitude, of dignified freedom from everything that's dirty, sticky.… — Wally Schirra Copy Share Image
Despite the campaign rhetoric, the bureaucracies-big business and big government-are here to stay. The centralization effort cannot be checked. but it can… — Timothy Leary Copy Share Image
One small ball in the air. I wouldn't believe that at this moment you have to fear the intelligence aspects of this. — Dwight D. Eisenhower Copy Share Image
The greatest gain from space travel consists in the extension of our knowledge. In a hundred years this newly won knowledge will… — Wernher von Braun Copy Share Image
It's too bad, but the way American people are, now that they have all this capability, instead of taking advantage of it,… — Lyndon B. Johnson Copy Share Image
A philosopher once asked, "Are we human because we gaze at the stars, or do we gaze at them because we are… — Jane Goldman Copy Share Image
How do you expect to get us to the Moon if you people can't even hook us up with a ground station? — Gus Grissom Copy Share Image
I'm proud to be an American, I'll tell you. What a program and what a place and what an experience. — Charles Duke Copy Share Image
First, inevitably, the idea, the fantasy, the fairy tale. Then, scientific calculation. Ultimately, fulfillment crowns the dream. — Konstantin Tsiolkovsky Copy Share Image
If people looked at the stars each night, they'd live a lot differently. When you look into infinity, you realize that there… — Bill Watterson Copy Share Image
I don't play golf and I don't collect stamps. I don't ride horses. I don't go mountain hiking, I don't go star… — Haim Saban Copy Share Image
The flight experience itself is incredible. It's addictive. It's transcendent. It is a view of the grand plan of all things that… — Scott Carpenter Copy Share Image
If you want to have a program for moving out into the universe, you have to think in centuries not in decades. — Freeman Dyson Copy Share Image
This is the result of six billion years of evolution. Tonight, we have given the lie to gravity.We have reached for the… — Ray Bradbury Copy Share Image
As I step off at the surface at Taurus-Littrow, I'd like to dedicate the first step of Apollo 17 to all those… — Gene Cernan Copy Share Image
Remember this: once the human race is established on more than one planet and especially, in more than one solar system, there… — Robert A. Heinlein Copy Share Image
The world is being Americanized and technologized to its limits, and that makes it dull for some people. Reaching the Moon restores… — Isaac Asimov Copy Share Image
More important than the material issue . . . the opening of a new, high frontier will challenge the best that is… — Gerard K. O'Neill Copy Share Image
It is in the long run essential to the growth of any new and high civilization that small groups of men can… — Freeman Dyson Copy Share Image
To venture into space we must be strong-willed and determined. We must be fully committed to its exploration and discovery; space permits… — Henry Joy McCracken Copy Share Image
Continuous as the stars that shine And twinkle on the milky way, They stretch'd in never-ending line Along the margin of a… — William Wordsworth Copy Share Image
I believe that these extra-terrestrial vehicles and their crews are visiting this planet from other planets, which obviously are a little more… — Gordon Cooper Copy Share Image
No national sovereignty rules in outer space. Those who venture there go as envoys of the entire human race. Their quest, therefore,… — Lyndon B. Johnson Copy Share Image
We stand on a great threshold in the human history of space exploration. If life is prevalent in our neighborhood of the… — Sara Seager Copy Share Image
The large-scale homogeneity of the universe makes it very difficult to believe that the structure of the universe is determined by anything… — Stephen Hawking Copy Share Image
I know enough about the moon to know how unpleasant and inhospitable it is. . . . I know enough about Mars… — Wally Schirra Copy Share Image
If we deny our awesome challenge; turn our backs on the living universe, and forsake our cosmic destiny, we will commit a… — Marshall Savage Copy Share Image
There are three reasons, . . . apart from scientific considerations, mankind needs to travel in space. The first . . .… — Freeman Dyson Copy Share Image
If we can avoid disaster for the next two centuries, our species should be safe as we spread into space. If we… — Stephen Hawking Copy Share Image
Too many of us have lost the passion and emotion of the remarkable things we-ve done in space. Let us not tear… — Ray Bradbury Copy Share Image
There is just no way that I can understand in God's green earth that an airline could undertake with its normal procedures… — Frank Borman Copy Share Image
The powered flight took a total of about eight and a half minutes. It seemed to me it had gone by in… — Robert Crippen Copy Share Image
