1 article for "Escape Velocity"

**Escape Velocity**[Astro*Index]

The speed necessary to escape from the gravitational field of a body. The velocity, Ve, required to escape from an orbit is obtained by allowing the *semi-major axis*, a, to tend to infinity, yielding: Ve = sqrt(2gR2/r)

See also: ♦ Orbital Velocity ♦ Semi-major Axis

Astro*Index Copyright © 1997 Michael Erlewine