astronomy homework 5 - Homework #5 April 30, 2010 1. CMBs...

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Homework #5 April 30, 2010 1. CMBs are radiation that existed in the very early Universe. We can see the photons and get the temperature and energy. Some of the richness that we get from the microwave background radiation is the information that it provides us about the beginning or formation of the Universe. The Big Bang is our most convincing theory of the Universe because it explains many cosmological observations. Since the Big Bang starts out an explosion that happens throughout the Universe, which means that there must be residual light from the explosion, and that light must be everywhere, this is called the microwave background. This helps us because the Universe started out with such extreme temperature, so we can use our knowledge of physics at high energies to model it. “This will then tell us the exact elemental abundances in the early Universe. These numbers have been well tested now and the predictions agree amazingly well with the observations. Other forms of information that are available do not provide
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astronomy homework 5 - Homework #5 April 30, 2010 1. CMBs...

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