The fact that scientists were able to accurately predict what this black whole should look like using the math at our disposal is about as good a piece of evidence as one can get.
I think it's on par with the LIGO detections (which I think also qualify as really strong evidence) given the specificity of the predictions and how closely they aligned with the observed data.
Taken as a whole, the body of evidence is really strong and it's amazing how much stronger it's become in just the last few years!
Taken as a whole, the body of evidence is really strong and it's amazing how much stronger it's become in just the last few years!
This is truly an amazing image.