If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277