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
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
If two pieces of metal touch in space, they become permanently stuck together.
808
Pluto is smaller than Russia.
9
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9