The population of the Earth has more than doubled since 1950.
151
There are two golf balls sitting on the moon.
721
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
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
41% of the moon is not visible from earth at any time.
103
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115