Evolution is not put forth as an explanation for the origins of matter or life.
As a matter of fact, once one has properly grasped the theory of evolution, it is not very difficult to imagine how life might have sprung into existence. Evolution is all about the most complex things evolving from the simplest organisms. Now it stands to reason that these organisms must have evolved from even simpler things, so trivial that we would not even call them "alive". Even these chemicals, before there was anything alive around, followed the same natural laws than us mammals, and still do.
The point being, we observe evolution on every level everywhere in the universe, not merely in biology.