The population of the Earth has more than doubled since 1950.
151
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4