One feature that distinguishes a black hole from all other objects in the universe is that
A) the escape velocity from inside a black hole is greater than the speed of light.
B) a black hole emits large quantities of X-rays.
C) a black hole exceeds 3 solar masses.
D) the shape of the gravitational field of a black hole is different from that of an ordinary massive object, even at large distances from it.

Question

Quizplus · Accepted Answer

The defining feature of a black hole is that its escape velocity exceeds the speed of light, meaning nothing, not even light, can escape from inside it. This is what distinguishes black holes from other objects in the universe.

One Feature That Distinguishes a Black Hole from All Other