Comment It's not there. (Score 1) 293
Either:
A. There is a fundamental aspect of space/time we don't understand. (Maybe there is some type of Aether?)
B. We don't understand gravity over long distances. (Maybe it has a different effect over longer distances than we are aware)
C. We are not measuring something else properly. Light, time, distance....?
This whole "dark matter" thing has been unreasonably preposterous from the word go.