Jupiter's moon Ganymede, is larger than the planet Mercury!
149
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
A comet's tail always points away from the sun.
2
Pluto is smaller than Russia.
9
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Buzz Aldrin’s mother’s maiden name was Moon.
9
Sound doesn't travel in space.
255