The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The earth travels through space at 660,000 miles per hour.
189
It takes eight and a half minutes for light to get from the sun to earth.
159
A comet's tail always points away from the sun.
2
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
41% of the moon is not visible from earth at any time.
103