event horizon
English
Noun
event horizon (plural event horizons)
- (astrophysics) The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light.
- (by extension) A point of no return.
Coordinate terms
- (astrophysics):
- singularity
- ergosphere
- photon sphere
- Schwarzschild radius
- frame dragging
Related terms
- absolute horizon
- apparent horizon
- Cauchy horizon
- dynamical horizon
- isolated horizon
- Killing horizon
- particle horizon
Translations
gravitational sphere within which light cannot escape
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See also
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