"http://en.wikipedia.org/wiki/Planck_density?oldid=493642128"^^ . . "planckdensity" . "http://dbpedia.org/resource/Planck_density"^^ . . "The Planck density is the unit of density, denoted by \\(\\rho_P\\), in the system of natural units known as Planck units. \\(1\\ \\rho_P \\ is \\approx 5.155 \\times 10^{96} kg/m^3\\). This is a unit which is very large, about equivalent to \\(10^{23}\\) solar masses squeezed into the space of a single atomic nucleus. At one unit of Planck time after the Big Bang, the mass density of the universe is thought to have been approximately one unit of Planck density."^^ . . . . . "5.155e+96"^^ . "Planck Density"@en . .