The population of the Earth has more than doubled since 1950.
151
Astronauts get taller when they are in space.
224
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Pluto is smaller than Russia.
9
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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