Question: what is the best evdence for the exsistence of black holes

Alexander Burke answered on 2 Mar 2018:

The best evidence? Without a doubt, the best evidence for black holes is how they warp the space around them. What I mean by this is that we managed to measure gravitational waves caused by the collision of two black holes. These gravitational waves (like ripples on a pond… see my description of what I do), are ripples in the fabric of space and they are only detectable by extreme astrophysical objects… such as black holes or neutron stars. The objects had to be black holes however since they were too heavy to be neutron stars!