On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The earth is .02 degrees hotter during a full moon.
157
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The light hitting the earth right now is 30 thousand years old.
163