The population of the Earth has more than doubled since 1950.
151
The light hitting the earth right now is 30 thousand years old.
163
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
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
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The heart of an astronaut actually gets smaller when in outer space.
216
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4