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solar sysuniverse? Describe its constituents.

Answer»

TheUniverseis all ofspaceandtimeand their contents,includingplanets,stars,galaxies, and all other forms ofmatterandenergy. While the spatial size of the entire Universe is unknown,it is possible to measure theobservable universe.This is ordinarymattercomposed ofprotons,neutrons, andelectrons. It comprises gas,dust, stars, planets, people, etc. This is the so-called "missing mass" of the universe. It comprises thedark matterhalos that surroundgalaxiesand galaxy clusters, and aids in the formation of structure in the universe.



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