[pagan3142]

for every thing that exists there is an equal and opposite.
this may move into the real of matter and anitimatter, but dark matter must exist as black is white.
if there is matter then it follows that there is also dark matter.
Matehematically this can be proved but have not the skill to draw you a diagramme.But consider a graph that starts at poit 0 , draw the 6 lines of reality and you will find that the graph eiter ends in a sine wave or infinity.