John Glenn

Pioneering African-American Nasa mathematician Katherine Johnson died at the age of 101.

Nasa announced your death on Twitter, saying it was to celebrate her life and honor of their "legacy of excellence, broke down racial and social barriers".

Mrs Johnson, rocket trajectories, and the earth calculated orbits for Nasa's early missions.

it was shown in 2016 Oscar-nominated film the Hidden Numbers.

the film tells The story of the African-American women, whose math skills helped US astronaut John Glenn into orbit around the earth in 1962. Ms Johnson check the calculations by the new electronic computers, prior to his flight.

Ms. Johnson was previously the trajectory for the space flight of Alan Shepard - The First American in space, are calculated. They also played an important role in sending people to The Moon .

Nasa administrator Jim bride Stine Ms, described Johnson as "a leader of our pioneering time".

"Ms. Johnson helped to increase the size of our nation, the boundaries of space, even as they made great progress, which also opened the doors for women and people of color to explore in the General human endeavor, the space," he said in a statement.

"their commitment and ability as a mathematician contributed to the man on The Moon and that it is possible that our astronauts are the First Steps in space, we now follow you on A Journey to Mars. "

Mrs Johnson the Presidential Medal of Freedom was awarded in the year 2015. In The Following year, then US President Barack Obama cited it in his State of The Union address as an example to the country, the spirit of discovery.

Source of news: bbc.com