The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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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.
18