Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The light hitting the earth right now is 30 thousand years old.
163
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The earth travels through space at 660,000 miles per hour.
189
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
It takes eight and a half minutes for light to get from the sun to earth.
159
There are two golf balls sitting on the moon.
721