But first, he insisted that Katherine Johnson double-check ... much present in the US south at the time. Johnson experienced it throughout her life but never let it get in her way.

Oh, it’s my job to know! My name is Katherine Johnson. I am a mathematician for NASA’s space program. And the astronaut who’s risking his life up there - he asked for me personally to check ...

Pioneering African-American Nasa mathematician Katherine Johnson has died at the age of 101. Nasa announced her death on Twitter, saying it was celebrating her life and honouring "her legacy of ...