Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Buzz Aldrin’s mother’s maiden name was Moon.
9
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
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46