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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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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