Katherine Johnson
Meet Katherine Johnson, a brilliant mathematician who worked at NASA in the early 1950s until retiring in 1986. Katherine s unparalleled calculations (done by hand) helped plan the trajectories for NASA s Mercury and Apollo missions (including the Apollo 11 moon landing). She is said to be one of the greatest American minds of all time.
ISBN: 9781534403406 (Paperback)
$5.99
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