Katherine Johnson was an American mathematician whose calculations of orbital mechanics as a NASA employee were critical to the success of the first and subsequent U.S. crewed spaceflights.

Did Katherine Johnson pass?

She was 101. Johnson died Monday of natural causes at a retirement community in Newport News, Va., family attorney Donyale Y. H. Reavis said.

Which hidden figure just died?

NASA mathematician Katherine Johnson, pictured at the 2017 Academy Awards, was one of the women profiled in the book and film Hidden Figures. She died Monday at 101. Katherine Johnson, a mathematician who was one of NASA's human "computers" and an unsung hero of the space agency's early days, died Monday.