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.
The two most common elements in the universe are also the two smallest ones: hydrogen and helium. Hydrogen is by far the most common element in the universe because it was the first element in the universe to be created.The Big Bang caused all of the hydrogen in the universe to be formed at the beginning.This hydrogen was then the basis for all heavier elements to be formed through fusion reactions. Since helium is formed by the fusion of two hydrogen atoms, it is the second most common element in the universe.The heavier elements like iron are much less common in the universe since they require more fusion reactions to occur. llltkl | College Teacher | (Level 3) Valedictorian.ince helium is formed by the fusion of two hydrogen atoms, it is the second most common element in the universe. The heavier elements like iron are much less common in the universe since they require more fusion reactions to occur. llltkl | College Teacher | (Level 3) Valedictorian.