The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Venus is the only planet that rotates clockwise.
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It 'snows' metal on Venus.
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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The population of the Earth has more than doubled since 1950.
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The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
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