Katherine Johnson surrounded by actresses Janelle Monae, Taraji P. Henson and Octavia Spencer on stage at the 89th Oscars in 2017. (Picture: Mark Ralston/AFP Photo)

Topic |   Science
Katherine Johnson surrounded by actresses Janelle Monae, Taraji P. Henson and Octavia Spencer on stage at the 89th Oscars in 2017. (Picture: Mark Ralston/AFP Photo)
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