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Katherine Johnson calculated the route to the moon
Katherine Johnson at NASA, in 1966

KATHERINE JOHNSON, the black mathematician who made the calculations that allowed men to walk on the moon, has died aged 101. 

Hers was one of the finest mathematical minds in the US.

Using little more than a pencil, a slide rule and her truly brilliant mind she calculated the precise trajectories that let Apollo 11 land on the moon and return to earth in 1969. 

The 95th Anniversary Appeal
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