Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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The light hitting the earth right now is 30 thousand years old.
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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
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.
6
NASA invented baby food as we know it today.
7