TIL In the early days of the U.S. space program, NASA didn't offer astronauts life insurance for in-flight missions, and private life insurance was extremely expensive. To get around this, the crew of the Apollo 11 mission signed hundreds of autographs for their families to sell if they died. If the mission went wrong, NASA planned to cut communication with the astronauts and let them either suffocate or take their own lives. https://bigthink.com/the-past/apollo-11-plan-b/