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TIL treadmills were used in Victorian times as punishments in prison

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WZ14 TIL in 1985 an F-15 fighter jet successfully shot down a satellite with a missile; by 1998, there were still 8 trackable pieces in orbit
WkAR9 TIL there are planets considered more habitable than Earth, based on potential for biodiversity. Scientists have identified 24 such planets so far.
V5EG TIL scientists didn’t discover a single male Blanket octopus until 2002 because they were looking at the wrong magnitude. Females can be up to 40,000 times more massive than males; the largest gender size discrepancy in the animal kingdom.
QJdlX TIL Steven Seagal was choked unconscious and promptly lost bowel after proclaiming his Aikido training would render him immune to chokes.
VMJ64 TIL the author of The Witcher sold the rights to his works to CD Projekt Red for a lump sum of $9,350, as he didn’t think the franchise would be successful. After the video game series became a success, he sued for $16.1 million.