Apply Quote by Donald A. Wollheim

Astronautics, strictly speaking, will be concerned with voyages to other stars. Remarkably enough, to achieve such feats, we might not even have to leave…

— Fritz Zwicky

For the first time in history, we have the chance to change the path of a celestial body. Let's realize what we're talking about…

— Rusty Schweickart

The revolutionary breakthrough will come with rockets that are fully and rapidly reusable. We will never conquer Mars unless we do that. It'll be…

— Elon Musk

I think that the first men to land on Pluto are going to make some very astonishing discoveries. But I am also sure that…

— Donald A. Wollheim

It may take endless wars and unbearable population pressure to force-feed a technology to the point where it can cope with space. In the…

— Robert A. Heinlein

I used to be a strong believer that we would eventually colonize the solar system the way it's been done in science fiction many,…

— Alastair Reynolds

It is fantastic to think that one day we may be able to access fuel, materials and even water in space instead of digging…

— Rusty Schweickart

We should explore new ways to drive down the cost of space travel. instead of costly booster rockets, maybe we should think of laser/microwave…

— Michio Kaku

Let me end with an explanation of why I believe the move into space to be a human imperative. It seems to me obvious…

— Gene Roddenberry

I think that an advanced planetary civilization will modify their own planets to be more stable, to prevent asteroid impacts and dangerous climate fluctuations.

— David Grinspoon

Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near…

— Wilson Greatbatch

Rockets have remained fundamentally unchanged, except for a few exceptions for the last almost 50 years. So, for there to be a fundamental shift…

— Leroy Chiao