The heart of an astronaut actually gets smaller when in outer space.
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Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
It 'snows' metal on Venus.
13
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175