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.
Each one of these galaxies contains billions of stars, and that is just a fraction of what we see. Yet if we map everything we know in the universe, what we consider to be solid and regard as normal matter â is less then 5% of the total density of the Universe. The rest of the universe is comprised of dark matter and dark energy, which is intrinsically empty space. [â¦].