ALL meanings of event horizon
- noun event horizon (astrophysics) The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light. 0
- noun event horizon (by extension) A point of no return. 0
- noun event horizon the surface around a black hole enclosing the space from which electromagnetic radiation cannot escape due to gravitational attraction. For a non-rotating black hole, the radius is proportional to the mass of the black hole 0
- noun event horizon the spherical boundary surrounding a black hole, within which there is such strong gravity that nothing, not even light, can escape 0