Another in my series of posts on spaceflight contingency planning. What if the Apollo Command and Service Module spacecraft's big Service Propulsion System main engine failed when time came to return home to Earth?

From No Shortage of Dreams.🛰️🔭🧪🚀🪐🌏👩‍🚀🌌

https://spaceflighthistory.blogspot.com/2015/10/failure-was-option-rescue-in-lunar.html