Katherine Johnson (played by Taraji P. Henson) calculates orbital insertion trajectories for the Mercury program using Euler’s method in this scene from the movie Hidden Figures. Credit: Twentieth Century Fox Film Corporation.

AL HARRISON:
You think we can get to the moon?

[Katherine nods, with all the certainty in the world:]

KATHERINE:
We’re already there, sir.

— Hidden Figures (2016)