The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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If two pieces of metal touch in space, they become permanently stuck together.
808
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
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
The Earth gets 100 tons heavier every day due to falling space dust.
673
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9