in See also Black hole – an object with an escape velocity greater than the speed of light Characteristic energy (C3) Delta-v budget – speed needed to perform maneuvers. Gravitational slingshot – a technique for changing trajectory Gravity well List of artificial objects in heliocentric orbit List of artificial objects leaving the Solar System Newton's cannonball Oberth effect – burning propellant deep in a gravity field gives higher change in kinetic energy Two-body problem Notes References External links Escape velocity calculator Web-based numerical escape velocity calculator Astrodynamics Orbits Articles containing video clips