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over 7 years ago

#SpaceFactoid The Schwarzschild radius of the Observable Universe is roughly equal to its age and current size. The universe is 13.7 billion LY across, as is the required radius to make it a black hole. ie. The universe exists on the verge of its own event horizon? #WhyIDontSleep

Nerds The Word @nerdstw

about 10 years ago

#SpaceFactoid Since its inception, @NASA has performed over 180 missions! In order to see them, check out: https://t.co/m7g7QZ4Z35

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