Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The light hitting the earth right now is 30 thousand years old.
163
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Sound doesn't travel in space.
255
If you went out into space, you would explode before you suffocated because there's no air pressure.
149