There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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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.
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If NASA sent birds into space they would soon die; they need gravity to swallow.
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If two pieces of metal touch in space, they become permanently stuck together.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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