Question

What is the main challenge astronomers face when trying to directly detect black holes?
Responses

Black holes are too small.
Black holes are too small. - no response given

Black holes trap all light.
Black holes trap all light. - no response given

Black holes are empty.
Black holes are empty. - no response given

Black holes are too black.

Answer 1

The main challenge astronomers face when trying to directly detect black holes is that "black holes trap all light." Because black holes have such strong gravitational fields, not even light can escape from them, making them incredibly difficult to observe directly. Instead, astronomers rely on indirect methods, such as observing the effects of a black hole's gravity on nearby stars and gas, to infer their presence.