Hard to speak generally over a large audience. I bet one qualification most would ask for would be that it come from a trustworthy, 3rd party's telescope or sa

Hard to speak generally over a large audience. I bet one qualification most would ask for would be that it come from a trustworthy, 3rd party's telescope or satellite. That could certainly sway many doubters. Out of curiosity, which pieces of evidence did you find compelling or how did you come to trust its source?