The RS-25 engine costs about $100 million each while the SpaceX Raptor 3 costs less than $500,000 each. Brian Wang Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million ...

SpaceX's Starship megarocket could finally ... The Super Heavy rocket booster will also be outfitted with a Raptor engine from the booster that launched and returned on Starship’s fifth flight ...