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TIL of the Photon Sphere, a spherical region of space where gravity is strong enough that photons are forced to travel in orbits. If you were to stand in this region and look straight ahead you would see the back of your head.

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rRMDd TIL the majority of the world's internet traffic passes through Ashburn, Virginia
yVLXJ TIL that Jane Park, Britains younger ever lottery winner won the lottery so young that she said it ‘ruined her life’, became depressed and considered suing the lottery for allowing someone to win at such a young age after she was left isolated, alone and left to manage millions
14wV TIL Many aspects of Christianity were decided by vote, including the divinity of Jesus Christ.
GeGQ TIL a newly detected fracture suggests that tectonic forces are pulling the continents together once again.
R79JQ TIL dogs wag their tails with a right bias in positive situations and with a left bias in negative situations.