Question

black holes quiz
what is the main challenge astronomers face when trying to directly detect black holes? (1 point)
black holes trap all light
black holes are empty.
black holes are too black.
black holes are too small

Explanation:

Black holes are regions of space - time with such strong gravitational pull that they trap all light. Since telescopes detect objects by the light they emit, reflect, or absorb, the fact that black holes trap all light makes direct detection extremely difficult.

Answer:

Black holes trap all light