Event Horizon
Concept
The boundary around a black hole beyond which nothing, not even light, can escape.
Mentioned in 2 videos
Videos Mentioning Event Horizon

Doctor Asks Physics Questions (ft @MedlifeCrisis)
Sabine Hossenfelder
The boundary around a black hole beyond which nothing, not even light, can escape.

Mapping the Heavens to Understand Dark Matter and Black Holes
Fermilab
The boundary around a black hole beyond which nothing, not even light, can escape.