The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
Astronauts get taller when they are in space.
224
The earth rotates more slowly on its axis in March than in September.
145
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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