Planet earth Quote by Carl Sagan

For most of us, the thought of traveling to another galaxy probably seems like science fiction. But the truth is, the foundation for humankind's…

— Victor J. Glover

“That place, called the heliopause, is one definition of the outer boundary of the Empire of the Sun. But the Voyager spacecraft will plunge…

— Carl Sagan

Control of space means control of the world.

— Lyndon B. Johnson

The solar system should be viewed as our backyard, not as some sequence of destinations that we do one at a time.

— Neil deGrasse Tyson

Throughout the history of spaceflight and the study of effects of exploring to human, space environment to human body, we have accumulated enough knowledge…

— Roman Romanenko

Despite the immense distance between our own solar system (including the earth) and the nearest other solar systems, a journey from one system to…

— Hermann Oberth

The solar system is completely wide open. Almost anywhere we go, I'm sure we would learn a lot.

— Alan Stern

We're in the space exploration business, and the outer solar system is a wild, wooly place. We haven't explored it very well.

— Alan Stern

By the way, Japan is also known to be actively engaged in manned space flights as part of the International Space Station.

— Vladimir Putin

“Astronomers research outer space and I research inner space.”

— Steven Magee

Elon just presented a plan for settling the solar system in this century that is realistic and affordable. In my paper, 'A Pathway to…

— Bruce Pittman

A few months after NASA was formed, I was asked if I knew anyone who would like to set up a program in space…

— Nancy Roman