The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Today's top fuel dragsters take off with more force than the space shuttle.
120
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Astronauts cannot burp in space.
232
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The heart of an astronaut actually gets smaller when in outer space.
216