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.
B. All but 2% of the mass in the universe is hydrogen and helium. 2% of the mass of the universe is hydrogen and helium, the rest is heavier elements. All but 2% of the mass of the universe is hydrogen. The universe contains about ten times as many hydrogen atoms as helium atoms, but a helium atom has four times the mass of a hydrogen atom.