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TIL that while in space astronauts sometimes see random flashes of light caused by cosmic rays hitting the optic nerve. We don’t see it on earth because the magnetosphere protects us from the rays.

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Bggjy TIL: The smell of rotten eggs from natural gas is added to identify it, natural gas is inherently odorless.
64O8 TIL During REM sleep, most of the body’s other muscles are stopped. Naturally reversible paralysis is a way to protect sleepers from injuring themselves by unconsciously acting out their dreams.
kxPm TIL poverty imposes a mental burden akin to losing 13 IQ points .
j6e5N TIL That Entemann's was forced to change its packages for some products when a dam burst destroying 5000 tons of packaging, and the equipment that made it.
kWyB TIL Following the release of Rocky IV, a joke was making rounds in Hollywood. Since Rocky had run out of opponents, he would have to fight an alien if a fifth movie was made. Jim and John Thomas took the joke seriously and wrote a screenplay based on it, which later became the movie “Predator”.