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TIL that the windshield of the SR-71 Blackbird can reach a temperature of over 600°F during flights at mach 3. It had to be made of quartz and was ultrasonically fused to the titanium hull in order to handle the stress.

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jNYAX TIL that eye movements can reveal people's sex, age, ethnicity, personality traits, drug-consumption habits, emotions, fears, skills, interests, sexual preferences, and physical and mental health.
16VV8 TIL in 1978, The Beatles record company Apple sued newly founded Apple Inc. for trademark infringement and won. Part of the agreement was for Apple Inc. to never enter the music business. When they created iTunes, a new lawsuit began but The Beatles lost this time (2006).
Z8rZv TIL three-quarters of the animated film A Goofy Movie had to be refilmed due to a single dead pixel on a faulty monitor, leading to Disney delaying the release of the film from Thanksgiving 1994 to April 7, 1995
Xm9E TIL Canada has it’s own captain America, “Johnny Canuck”, who in his comics, fought nazis with a hockey stick and ended ww2.
8axv4 TIL of prominent Mafia Capo and hitman Gergory Scarpa. He contracted of AIDS after receiving a blood transfusion from his close friends and family. He refused the blood from the hospital blood bank because he feared that the blood might have come from blacks. The AIDS claimed his life 2 years later.