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
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Some asteroids have other asteroids orbiting them.
131
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The earth travels through space at 660,000 miles per hour.
189