I finishing watching Stephen Hawkings DVD "The Universe" a while back, and I was struck with his arrogance about how much modern science knows when a gaping hole exists in Astrophysics namely: "Where is 97% of the mass of the Universe hiding?"
His attitude was one of distain for Religion, while at the same time, blind to how much faith is required to be an atheist.
Otherwise it was the best movie I've ever seen about the modern search for Truth and Astrophysics.
Your post rightly starts with a mention of Dark Matter, so I consider it Right On!