Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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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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The light hitting the earth right now is 30 thousand years old.
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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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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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