Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The light hitting the earth right now is 30 thousand years old.
163
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
A comet's tail always points away from the sun.
2
Astronauts get taller when they are in space.
224
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219