If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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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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A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
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A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
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Astronauts cannot burp in space.
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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