Is Dark Matter Making Up the Universe?

Only 15% or so of all the matter in the universe is our kind of matter. In fact, there's a lot more of another kind of matter that makes up all the stuff in the universe. Danel Whitston: Yet you always strike me as a little abnormal for a physicist. That's dark. Ha, ha, ha. Tret of compliment. Yore, an abnormal physicist? Then your whole joke is kind of dark.