The population of the Earth has more than doubled since 1950.
151
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Some asteroids have other asteroids orbiting them.
131
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115