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TIL where astronauts sleep on a space station has to be extremely well ventilated with a constant flow of air over them. Warm air does not rise in space so astronauts in badly-ventilated sections end up surrounded by a bubble of their own exhaled carbon dioxide, the result being oxygen starvation.
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whatilearned
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TIL Physicist Georges Lemaître was the first to calculate the universe is expanding, a theory known as Hubble’s Law. He then calculated formulas regarding this expansion which became known as Hubble’s Constant. His “Big Bang Theory” was named sarcastically by a rival who didn’t believe it was true
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whatilearned
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