The SpaceX Demo-2/Dragon spacecraft was successfully launched into space on Saturday May 30, 2020, marking the first-ever collaboration between NASA and a private entity, Elon Musk's SpaceX. The Falcon 9 booster was comprised of nine SpaceX Merlin rocket engines, which use RP-1 (refined petroleum) and liquid oxygen as propellants to develop the immense thrust necessary for a heavy space-bound launch vehicle. All the news reports were dutifully filled with superlatives regarding this unprecedented public-private joint venture, and it was indeed a very significant accomplishment. It's not often that the two normally-opposing spheres of industry come together in such a positive...