Is there empirical evidence for dark matter and dark energy?

Evidence is simply any fact which make a proposition more likely than would be the case if the fact were not present. Even facts which increase the likelihood by a small amount are still evidence supporting the proposition.Evidence should be distinguished from proof which be an utterly convincing collection of evidence.Sometimes the same facts will support multiple plausible, but contradictory propositions. In that case perhaps the evidence is not sufficient for our needs without still more evidence.Using the above definition, I think it is clear that there is empirical evidence for dark matter. But the same facts are also empirical evidence that our understanding of gravitation is flawed.

Those are two separate questions. There is empirical evidence that dark matter and dark energy exist, but the evidence does not prove their existence.Nearly every other poster has said something similar using different words. As per your request, I have not used the "p" word.I'm more interested in your own acceptance of dark matter and energy as facts. I hope discussion of that is on topic here.Edited by NoNukes, : No reason given.