Where should an astronomer look for an event horizon?
A) in the photosphere of a star (e.g., the Sun)
B) in the magnetosphere of a neutron star
C) at the edge of the visible universe
D) near a black hole

Question

Quizplus · Accepted Answer

Event horizons are associated with black holes; they are the boundaries beyond which nothing, not even light, can escape the gravitational pull of the black hole.

Where Should an Astronomer Look for an Event Horizon