Jupiter's moon Ganymede, is larger than the planet Mercury!
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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.
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Astronauts cannot burp in space.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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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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It 'snows' metal on Venus.
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Lightning strikes about 6,000 times per minute on this planet!
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Venus is the only planet that rotates clockwise.
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