The Earth gets 100 tons heavier every day due to falling space dust.
673
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
If two pieces of metal touch in space, they become permanently stuck together.
808
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Buzz Aldrin’s mother’s maiden name was Moon.
9
Some asteroids have other asteroids orbiting them.
131
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221