Yet Another Thing That Could Go Wrong

During their moonwalk, Neil and Buzz had to remember not to close the door on the Eagle Lunar Lander because it had no handle on the outside. It was designed this way because an outside handle would have greatly affected the calculations of the descent. How many times have you been scolded for leaving a door open? Can you imagine if they simply closed it out of habit? Not only would it be embarrassing, they’d be stuck on the Moon forever.

NASA