I should keep track of my favorite authors better. Henry SF Cooper, author of Apollo on the Moon, Thirteen: The Flight that Failed and the majestic The Evening Star (which is about how the Magellan probe team debugged OS race conditions from 20 million miles away) died in January.
I can’t say enough good things about The Evening Star. If you’re into computers or into space exploration, it’ll be a great read. If you’re into both, it’s incomparable.
I highly recommend all of his books.