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.
Mass refers to the quantity of matter present, and is expressed in terms of how much the object would weigh on Earth. A bit complex, so consider this example: a bowling ball that weighs 10kg on Earth has a mass of 10kg. On Jupiter the bowling ball would weigh quite a bit more, but its mass would still be 10kg.