AST 307 · Introductory Astronomy
Fall 2003


Chapter 27  Dec. 1-5

  1. How was the microwave background radiation emitted?
    Why does it have the spectrum it does, with a peak wavelength near 1 mm?

  2. Describe the nuclear reactions which occurred during the first few minutes after the big bang. What elements were made then? What do the abundances of these elements tell us about the Universe?

  3. Describe the problems that the theory of cosmic inflation tries to explain. Try to explain how it solves these problems.

  4. Describe the evidence that there is dark matter and vacuum (or dark) energy throughout the Universe.

26 November 2003
Astronomy Program · The University of Texas at Austin · Austin, Texas 78712
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