An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Earth is the only planet in our solar system that's not named after a god or goddess.
17
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Sound doesn't travel in space.
255
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.
20
It would take more than 150 years to drive a car to the sun.
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