Evidence for The Big Bang

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Evidence for The Big Bang 10/12/16 Evidence for The Big Bang Objective: I will explain the supporting evidence for the Big Bang Theory. PAGE 23

1) The Universe is Expanding Edwin Hubble (1929) observed galaxies were moving away from each other

1) The Universe is Expanding How? Hubble noticed a red shift light being emitted (given off) from the galaxies was shifting to longer wavelengths

1) The Universe is Expanding Hubble's Law: universe is expanding New research (1990’s): expansion is accelerating Dark Energy?

2) Cosmic Microwave Background Radiation early universe was a white hot hydrogen “soup” If we look at the "edges" of the observable universe, we should be able to see this heat

2) Cosmic Microwave Background Radiation this radiation was observed in the 1960's 2003: the Wilkinson Microwave Anisotropy Probe (WMAP) provided us with a picture and measurements to prove this

3) Mixture of Elements in Early Universe Big Bang predicts the first elements to be produced were Hydrogen, Helium, and Lithium Therefore, the oldest stars must contain only H, He, and Li. This has been observed!

4) Observing a Changing Universe astronomers have observed that the oldest stars and galaxies are much different than those formed more recently structures in the Universe have become more complex