The factor most directly responsible for making a black hole invisible is its
A)size.
B)mass.
C)color.
D)surface escape velocity.
E)none of the above

Question

Quizplus · Accepted Answer

Surface escape velocity, also known as the speed required for an object to escape the gravitational pull of a massive body, is directly related to the mass of the body. A black hole's mass is so large that its surface escape velocity is greater than the speed of light. Therefore, nothing, including light, can escape from a black hole's gravitational pull making it appear invisible.

The Factor Most Directly Responsible for Making a Black Hole