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 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
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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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
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