Thrust Vector Control (TVC) lets rockets steer by tilting their engines, changing the direction of thrust mid-flight. Used by SpaceX’s Falcon 9 and Starship, TVC replaces fins in space, guiding rockets with precision. Through dual-axis gimbals, simple trigonometry, and real-time control, rockets stay stable and on course. From large boosters to student-built models, TVC is the key to modern rocket control and reusable spaceflight.