Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
It 'snows' metal on Venus.
13
Some asteroids have other asteroids orbiting them.
131