There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
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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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Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
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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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Earth is the only planet in our solar system that's not named after a god or goddess.
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