The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
If two pieces of metal touch in space, they become permanently stuck together.
808
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Jupiter is bigger than all the other planets combined.
254
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
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
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Pluto is smaller than Russia.
9