Escape velocity

Concept in celestial mechanics Part of a series onAstrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major axis True anomaly Types of two-body orbits by eccentricity Circular orbit Elliptic orbit Transfer orbit (Hohmann transfer orbitBi-elliptic transfer orbit) Parabolic orbit Hyperbolic orbit Radial orbit Decaying orbit Equations Dynamical friction Escape velocity Kepler's equation Kepler's laws of planetary motion Orbital period Orbital velocity Surface gravity Specific orbital energy Vis-viva equation Celestial mechanics Gravitational influences Barycenter Hill sphere Perturbations Sphere of influence N-body orbitsLagrangian points (Halo orbits) Lissajous orbits Lyapunov orbits Engineering and efficiency Preflight engineering Mass ratio Payload fraction Propellant mass fraction Tsiolkovsky rocket equation Efficiency measures Gravity assist Oberth effect Propulsive maneuvers Orbital maneuver Orbit insertion vte Part of a series onSpaceflight History History of spaceflight Space Race Timeline of spaceflight Space probes Lunar missions Mars missions Applications Communications Earth observation Explo