{"type":"rich","version":"1.0","title":"Matter density parameter","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"\\Omega_m = \\frac{\\rho_m}{\\rho_c} = \\frac{8 \\pi G \\rho_m}{3 H^2}\">\\Omega_m = \\frac{\\rho_m}{\\rho_c} = \\frac{8 \\pi G \\rho_m}{3 H^2}</span>","width":640,"height":320}