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TIL that Louis Armstrong always wore a Star of David as an homage to a Jewish family that took him in when he was young and gave him his first horn

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R7oYw TIL a magnetar star on the other side of the galaxy experienced a "star quake". In a tenth of a second, a flare was released during the quake with more power than what our sun can produce in 150,000 years.
d88Jd TIL Aubrey Eberhardt was the first person to shout "Geronimo" jumping from a plane
womR1 TIL In a single battle in a single day, one-quarter of the entire United States Army had been destroyed. It was the most decisive defeat in American history with 69% of soldiers killed and 97% casualties. It's known as St Clair's defeat and Major General St Clair resigned his commission afterwards.
RAv1 TIL the Pharaoh Sesostris defeated an army so easily that he built a vagina statue in their capital because they “fought like women”.
8arDZ TIL that Decision theory is the study of an agent's choices. Decision theory can be broken into two branches: normative decision theory, which analyzes the outcomes of decisions or determines the optimal decisions given constraints and assumptions.