Enter the amount to be converted in the box to the left of the currency and press the convert button. To show Bangladeshi Taka and just one other currency click on any other currency. The Bangladeshi Taka is the currency in Bangladesh (BD, BGD). The symbol for BDT can be written Tk.
Mass, Size, and Density of the Universe. The mass density of visible matter (i.e., galaxies) in the Universe is estimated at 3e-28 kg/m^3 (3e-31 times the mass density of water). The radius of the visible Universe is estimated at 1.7e26 m (18 thousand million lightyears) plus or minus 20 percent or so.
Since observations indicate the universe is almost flat, we expect the total energy density of everything in the universe to sum to 1 (Î©tot ~ 1). The measured dark energy density is ÏÎ» = ~0.690; the observed ordinary matter energy density is Î©m = ~0.0482 and the energy density of radiation is negligible. This leaves a missing Î©dm = ~0.258 that nonetheless behaves like matter (see technical definition section above) â dark matter.