It takes eight and a half minutes for light to get from the sun to earth.
159
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
The population of the Earth has more than doubled since 1950.
151
Venus is the only planet that rotates clockwise.
310
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth travels through space at 660,000 miles per hour.
189