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TIL A black dwarf is a stellar remnant that has cooled sufficiently that it no longer emits significant heat or light. The estimated time for the Sun to cool enough to become one is about 1 quadrillion years, though it could take much longer than this, if weakly interacting massive particles exist

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8expX TIL the global population of humanity's ancestors once fell from 100k to only 1,000 individuals
JWZk TIL middle names became a necessity during the middle ages because there were too many people with the same name and populations had risen exponentially, “The great cities on the planet earth were only a fraction of their size hundreds of years ago.”
PYgoJ TIL in 1835, President Andrew Jackson successfully paid off the debt of the United States. The only time in history this has ever been accomplished.
5Ym1n TIL That the Czech language was saved from extinction by puppet shows. In the 17th century, the Catholic Ferdinand II forced the Protestant Czech people to speak in German and banned the Czech language. Puppets were the only remaining entities that had the right to speak Czech in public places.
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