There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Astronauts get taller when they are in 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