Back in 1962, engineers argued over using nuclear, chemical, or electric...

https://www.yankee-bookmarkings.win/before-we-reached-the-moon-nasa-engineers-spent-years-fighting-over-how-to-1

Back in 1962, engineers argued over using nuclear, chemical, or electric propulsion. It wasn't just theory; it defined the limits of our reach. By reading their old memos, we see how these debates shaped today’s hardware