The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
NASA invented baby food as we know it today.
7
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
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.
6
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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