A large part of the Apollo missions code was written by women.
Why it is true
Teams of female programmers at MIT, led by Margaret Hamilton, developed the flight software that allowed the astronauts to land on the Moon safely.
Source: Space History
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.