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..., momentum, and angular momentum) to symmetries of [[space]] and [[time]] (homogeneity and isotropy). By that time, [[Albert Einstein]]'s (1879–1955) [[Theory o ==Particle Physics==

...any object and/or its location with respect to another location. Modern [[physics]] does not treat space and time as independent dimensions, but treats both ===In physics===

...[quasars]]) and the very early universe, when it was nearly [[Homogeneity (physics)|homogeneous]] ([[big bang|hot big bang]], [[cosmic inflation]] and the [[c ...mology unites the physics of the largest structures in the universe to the physics of the smallest structures in the universe.

**Department of Physics and Astronomy ...smooth. In short, we need to account for local [[differences]] and global homogeneity.