Jupiter is bigger than all the other planets combined.
254
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The light hitting the earth right now is 30 thousand years old.
163
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Sound doesn't travel in space.
255
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
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
Today's top fuel dragsters take off with more force than the space shuttle.
120