The conversation between human and AI assistant.
How can gravity escape out of a black hole when it is known that even light cannot escape a black hole, does this mean gravity is faster than light?
Yes, how do scientists observe black holes if nothing can escape them?
Scientists observe black holes indirectly by detecting their effects on nearby matter. For example, if a black hole has a companion star, the companion's orbit can reveal the presence of the black hole. Also, the gravitational lensing effect caused by a black hole can distort the light of stars behind it. These observations can help scientists learn more about black holes and their properties. Do you have any other questions about black holes?