Sound doesn't travel in space.
255
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The light hitting the earth right now is 30 thousand years old.
163