The population of the Earth has more than doubled since 1950.
151
Some asteroids have other asteroids orbiting them.
131
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
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
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
Buzz Aldrin’s mother’s maiden name was Moon.
9
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