The Doppler Effect  eCZ_AaY eCZ_AaY.

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Presentation transcript:

The Doppler Effect  eCZ_AaY eCZ_AaY

Doppler Effect Explained  t63xYSgmKE&feature=related t63xYSgmKE&feature=related  nXSfY nXSfY

Hubble’s Discovery  In the early 1920’s, Edwin Hubble observed 46 Galaxies  He notice most of these galaxies were “red-shifted”, meaning were moving away from earth.  What conclusion do you think he made from this discovery? (TPS)

 boacV0&feature=related boacV0&feature=related

Evidence for the Big Bang  The Red-shifted galaxies observed by Hubble give evidence of the Big Bang  Hubble observed that the farther a galaxy was away from earth, the faster it is moving away  This led to the conclusion that the universe is expanding

Big Bang  The Big Bang theory states that the universe formed when an infinitely dense point suddenly and rapidly expanded in a single moment.  All the matter and energy that exists today was created during the early minutes of that hot, rapid expansion.