â Open Transport Incorporated's implementation action plan focused on a 3 year rolling plan to improve roads highways and bridges to be monitored on an annual basis. â Was this Helpful? YES NO 3 people found this helpful.
This is the missing-mass problem. If this factor of ten holds throughout the Universe, then the total mass in the Universe would be about 6e52 kg. If the missing mass were mostly in the form of hydrogen atoms (which is not at all clear) then the number of atoms would be about 4e79.
(Convert this to a weight by considering the volume of the visible Universe and you get 100 trillion trillion trillion trillion tonnes, give or take a few kilograms.) The measured density of the Universe matches the critical value to within about 6 per cent.