Taken from the July 2019 issue of Physics World.
As he watched the film First Man, a particular scene towards the end caught the attention of physicist Michael Hill-King. In this article (originally published in Lateral Thoughts, Physics World’s regular column of humorous and offbeat essays, puzzles, crosswords, quizzes and comics, which appears on the back page of the print edition), he finds out why the Apollo 11 astronauts were quarantined on their return to Earth