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ZHONG Cuixiang
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DOI:10.17265/2159-5348/2018.01.002
Department of Physics, Jiangxi Normal University, Nanchang 330022, China
In 1929, American astronomer Hubble first discovered that the recessional velocity of a galaxy increases with its distance from the earth, and therefore put forward Hubble’s law. It is considered the first observational basis for the expansion of the universe and today serves as one of the pieces of evidence most often cited in support of the Big Bang model. Since then the astrophysics community has believed that the universe is in a constant rate of expansion until Saul Permutter, Brian Paul Schmit and Adam Guy Riees discovered the accelerating expansion of the universe through observation of several dozen distant supernovas in 1998, who then won the Nobel Prize in Physics 2011. But human still cannot completely explain the phenomenon that the universe is expanding at an ever-accelerating rate. Thus the author of this paper studied the origin and evolution of galaxies again, and revealed the structure of galaxy and proved Hubble’s law, then revealed the truth about the expansion of the universe as well as dark matter and dark energy.
Galaxies, structure, Hubble’s law, universe’s expansion, dark matter, dark energy.