Orbit by Speed, Not Altitude: Why 28,000 km/h Keeps You Falling Around Earth
Reaching orbit isn’t about climbing higher; it’s about building sufficient horizontal velocity so the ground curves away beneath the spacecraft as it keeps falling around Earth. Typically around 28,000 km/h for low Earth orbit, most of which is sideways, is achieved after an initial vertical climb to clear the atmosphere and a pitch-over as air thins. The launch involves staging to shed dead weight, plus exploiting Earth's eastward rotation for a small speed boost. Precise direction and velocity matter to ensure the spacecraft remains in a stable orbit rather than re-entering, with engines used for later adjustments rather than simply holding it up. In short, orbit equals the right speed in the right direction, not just the right height.
