Originally Posted by Ferus

Up hill for you , when you dont even understand the written word in from of you.
Let me break it Down for you.

- "Although all known chemical matter is composed of these elements"
- "chemical matter itself is hypothesized to constitute only about 15% of the matter in the universe"
- "The remainder is believed to be dark matter"

So, to sum it up;
15% of the matter in the universe is hypothesized to be Chemical, the rest is dark matter.
OF the 15% Chemical matter, we know and have identified whats in the periodic table