The 4 Percent Universe
... that the book The 4 Percent Universe discusses how visible matter makes up only four percent of the matter in the universe?
... that the book <i id="mwBM0"><b id="mwBM4"><a href="./The_4_Percent_Universe" id="mwBM8" rel="mw:WikiLink" title="The 4 Percent Universe">The 4 Percent Universe</a></b></i> discusses how visible <a href="./Matter" id="mwBNA" rel="mw:WikiLink" title="Matter">matter</a> makes up only four percent of the matter in the <a href="./Observable_universe" id="mwBNE" rel="mw:WikiLink" title="Observable universe">universe</a>?