There are two golf balls sitting on the moon.
721
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Jupiter is bigger than all the other planets combined.
254
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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