If two pieces of metal touch in space, they become permanently stuck together.
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If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
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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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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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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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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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