Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
It 'snows' metal on Venus.
13
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
The earth is .02 degrees hotter during a full moon.
157
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
If you went out into space, you would explode before you suffocated because there's no air pressure.
149