r/SpaceX has a lot of good info. Check out the "What are the differences between the Falcon 9 v1.1 and the upgraded Falcon version popularly called the v1.2?"

r/SpaceX has a lot of good info. Check out the "What are the differences between the Falcon 9 v1.1 and the upgraded Falcon version popularly called the v1.2?" FAQ here: https://www.reddit.com/r/SpaceX/wiki/faq/falcon https://www.reddit.com/r/SpaceX/wiki/faq/falcon This Wikipedia page has a mention of super-chilling: https://en.wikipedia.org/wiki/RP-1 https://en.wikipedia.org/wiki/RP-1