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Hiram 10 month s ago
My head is full of new knowledge. Thank you.
       
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2.
Audrey 10 month s ago
What does TIL mean?
       
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Dotha 10 month s ago
Audrey, Today I Learned
       
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"TIL when NASA used electronic computers for the first time - to calculate John Glenn's orbit around Earth - officials called on Katherine Johnson to verify the computer's numbers; Glenn had asked for her specifically and had refused to fly unless Johnson verified the calculations."

 

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