Property of galaxies and general galaxy information.

Write about the property of galaxies and galaxy information. For example,Future of an Open/Flat Universe, or The Cosmological Principle:
Homogeneity: On the largest scales, the local Universe
has the same physical properties throughout the
Universe.
Isotropy: On the largest scales, the local Universe looks
the same in any direction that one observes
Universality: The laws of physics are the same
everywhere in the Universe.

If possible, please also include some general universe history.

IMPORTANGT: Scientific Referencing is REQUIRED in AIP (American Institute of Physics) Style,
whereby ONLY integers are used in the Report text.

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