SpaceX has unveiled the Raptor 3 engine, marking significant advancements in thrust, specific impulse, and mass efficiency compared to previous versions. The Raptor 3 boasts a thrust of 280 tf, a specific impulse of 350s, and an engine mass of 1525 kg. The SpaceX Raptor 3 engine has potential to exceed 300 tons of thrust in future iterations, emphasizing ongoing efforts to improve efficiency.