The population of the Earth has more than doubled since 1950.
151
Pluto is smaller than Russia.
9
The sun is 330,330 times larger than the earth!
190
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
A comet's tail always points away from the sun.
2
Venus is the only planet that rotates clockwise.
310