: High thrust but low efficiency; used for launching from Earth.
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| Rocket | Operator | Payload to LEO | |--------|----------|----------------| | Falcon 9 | SpaceX | ~22,800 kg | | Electron | Rocket Lab | ~300 kg (small) | | Ariane 6 | ESA | ~21,600 kg | | SLS | NASA | ~95,000 kg | : High thrust but low efficiency; used for
Key lesson: Most of a rocket’s launch mass is fuel (often 85–90%). : High thrust but low efficiency