Venus is the only planet that rotates clockwise.
310
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Some asteroids have other asteroids orbiting them.
131
Sound doesn't travel in space.
255
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The heart of an astronaut actually gets smaller when in outer space.
216