Carl Sagan Space Quotations

We can make a similar examination, but with greater uncertainty, of the extraterrestrial hypothesis that holds that a wide range of UFOs viewed on the planet Earth are space vehicles from planets of other stars.

I would be very ashamed of my civilization if we did not try to find out if there is life in outer space.

We are made of star stuff. For the most part, atoms heavier than hydrogen were created in the interiors of stars and then expelled into space to be incorporated into later stars. The Sun is probably a third generation star.

Any civilization that doesn't develop space travel dies.

In the fabric of space and in the nature of matter, as in a great work of art, there is, written small, the artist's signature.

A single message from space will show that it is possible to live through technological adolescence. . . . It is possible that the future of human civilization depends on the receipt of interstellar messages.

Centuries hence, when current social and political problems may seem as remote as the problems of the Thirty Years' War are to us, our age may be remembered chiefly for one fact: It was the time when the inhabitants of the earth first made contact with the vast cosmos in which their small planet is embedded.

By looking far out into space we are also looking far back into time, back toward the horizon of the universe, back toward the epoch of the Big Bang.

Once we overcome our fear of being tiny, we find ourselves on the threshold of a vast and awesome Universe that utterly dwarfs — in time, in space, and in potential — the tidy anthropocentric proscenium of our ancestors.

In the vastness of space and the immensity of time, it is my joy to share a planet and an epoch with Annie.

The universe is a pretty big place. If it's just us, seems like an awful waste of space.

We on Earth have just awakened to the great oceans of space and time from which we have emerged.

There is perhaps no better a demonstration of the folly of human conceits than this distant image of our tiny world.

Imagine we could accelerate continuously at 1 g-what we're comfortable with on good old terra firma-to the midpoint of our voyage, and decelerate continuously at 1 g until we arrive at our destination. It would take a day to get to Mars, a week and a half to Pluto, a year to the Oort Cloud, and a few years to the nearest stars.

Across the sea of space, the stars are other suns.

Atoms are mainly empty space. Matter is composed chiefly of nothing.