The heart of an astronaut actually gets smaller when in outer space.
216
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
It 'snows' metal on Venus.
13
It takes eight and a half minutes for light to get from the sun to earth.
159
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Buzz Aldrin’s mother’s maiden name was Moon.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14