Satellites
What satellites do, how they stay up, and the orbits, constellations and tech behind them.
Satellites
How GPS Works: Atomic Clocks, Signals and Relativity
GPS finds your position by timing signals from satellites about 20,000 km up. Learn how atomic clocks, trilateration and relativity combine into one fix.
SatellitesHow Satellites Stay in Orbit: Falling Sideways Around Earth
Satellites stay up by falling around Earth fast enough that the ground curves away. Speed, altitude and drag explain why orbits work and why they decay.
SatellitesSatellite Orbits Compared: LEO, MEO and GEO Explained
Low, medium and geostationary orbits trade speed, latency, coverage and cost. Compare altitudes, periods and typical uses with real figures in one table.