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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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The light hitting the earth right now is 30 thousand years old.
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NASA invented baby food as we know it today.
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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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