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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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
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