1. The Space Barons: Elon Musk, Jeff Bezos, and the Quest to Colonize the Cosmos;Davenport,2018
2. Amazon Unbound: Jeff Bezos and the Invention of a Global Empire;Stone,2021
3. Elon Musk Hints at a Crewed Mission to Mars in 2029;Torchinsky,2022
4. Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future;Vance,2016
5. @elonmusk: “20 to 30 Years from First Human Landing if Launch Rate Growth Is Exponential. Assumes Transferring ∼100k Each Rendezvous and ∼1M Total People Needed;Musk,2022