On the other hand: SpaceX is generally considered one of the most efficient space companies. Founded in 2002, the company has received funding from NASA, the Department of Defense, and private investors. Over its history, we can reliably estimate that SpaceX has expended a total of $16 billion to $20 billion on all of its spaceflight endeavors. Consider what that money has bought: • Development of Falcon 1, Falcon 9, and Falcon Heavy rockets • Development of Cargo Dragon, Crew Dragon, and Cargo Dragon 2 spacecraft • Development of Merlin, Kestrel, and Raptor rocket engines • Build-out of launch sites at Vandenberg (twice), Kwajalein Atoll, Cape Canaveral, and Kennedy Space Center