What Is the Horizon That Is the Point of No Return That Surrounds a Collapsed Star?
The horizon that is the point of no return, that surrounds a collapsed star, is known as the inflection arise in horizon. This is the point were the collapsed star becomes a black hole.
1 Additional Answer
The Event Horizon is is thought to be the point of no return. The escape velocity for the black hole is greater than that of the speed of light. That means light would have to travel faster than its velocity of 300,000km/h to escape. The event horizon coincides with the apparent horizon at some point and is a static state at some point.