"I find it as difficult to understand a scientist who does not acknowledge the presence of a superior rationality behind the existence of the universe as it is to comprehend a theologian who would deny the advances of science."<quoted text>
And like I said, astronomers use calculations based on dark matter theory to successfully predict the status of astronimical phenomena. This is called testing a theory. Apparently it works.
I'm not an astrophysicist so if you like you can go ask one to go into more detail into how it works.
-Wernher Von Braun
--German-American rocket scientist