Wait a minute... isn't the evidence for supermassive black holes also a velocity problem

so we have dark matter dark energy the pioneer anomaly supermassive black holes .... what are all very calm winds of evidence suggesting that we don't understand gravity... Or they all imply what they seem to imply, but maybe both.
So this question is- is it possible that rather than their being supermassive black holes at the center of every dog gone galaxy, maybe this is the reverse of dark matter problem?

The anomalies that appear at the centers of galaxies indicate a large amount of mass in a very small space - so small that the mass must be what we call a black hole: a mass so dense that its escape velocity exceeds the speed of light. The dark matter issue is different, in that there is an apparent gravitational field but we can't find any matter that might be causing it. In a sense, though, a black hole *is* dark matter, as it also has no properties other than mass and spin and neither emits nor reflects light.

The Pioneer anomaly, BTW, now looks as though it can be explained by the thermal radiation from the spacecraft themselves: http://planetary.org/blogs/bruce-betts/3…

Dark energy, yes. We don't have a theory to completely explain the results we have on rate of universe expansion vs. time.

Dark matter, no. We predict the existence of dark matter BECAUSE of our gravitational theories. It's a consequence of our gravitational theory. So it can't contradict them.

Not sure what your point about supermassive black holes is. We have observational evidence of those.

I just wrote a lengthy answer to your dark matter question and the question was deleted before the answer could be posted. It would have answered your current question but I didn't save the post and now I'm just not in the mood to bother.

Think ahead before you delete your questions.

It's just so much gravity. :)))))))) it gets me horny