Happy birthday, Dr. Katherine Johnson!
Posted: August 25th, 2017 | Author: timp67 | Filed under: T Writes | Tags: Birthdays, Science | No Comments »Happy 99th birthday Katherine Johnson, NASA mathematician who calculated the trajectory of the Apollo 11 mission https://t.co/aay2OKlxev pic.twitter.com/f04GIFINDU
— Dr Paul Coxon (@paulcoxon) August 25, 2017
To learn more about Dr. Johnson, go here!
