SpaceX vs Blue Origin — here are the 3 big differences you should know! First: their rockets. SpaceX’s main rocket is the Falcon 9 — 230 feet tall, 12 feet wide, and it launches about once every 2–3 days, making it the most reliable reusable rocket ever flown. SpaceX uses it for sending astronauts, satellites, cargo, and Starlink to space But their biggest rocket is Starship — a 400-foot stainless-steel tower with 33 engines, able to carry 150 tons to orbit, 6.5x what Falcon can lift, and more t