Mars appears red
...that the planet Mars appears red primarily because of a ubiquitous layer of dust containing nanophase ferric oxides?
...that the <a href="./Planet" id="mwENI" rel="mw:WikiLink" title="Planet">planet</a> <b id="mwENM"><a href="./Mars_surface_color" id="mwENQ" rel="mw:WikiLink" title="Mars surface color">Mars appears red</a></b> primarily because of a ubiquitous layer of <a href="./Dust" id="mwENU" rel="mw:WikiLink" title="Dust">dust</a> containing <a href="./Nanophase_material" id="mwENY" rel="mw:WikiLink" title="Nanophase material">nanophase</a> <a href="./Iron(III)_oxide" id="mwENc" rel="mw:WikiLink" title="Iron(III) oxide">ferric oxides</a>?