1. How did Einstein's new theory help to resolve the dilemma posed by discovering that the orbit of Mercury did not conform to Newton's Laws.

2. Summarize the Shapley-Curtis debate and its implications on the overall size of our Galaxy and the size of the Universe.

3. Briefly outline the procedure/experiment that Penzias And Wilson used to discover (accidentally) the Microwave Background

4. What was the COBE mission of NASA and what were its main results? What is the WMAP mission and how has it improved upon the COBE results?

5. Explain how the currently observed density of deuterium is a sensitive probe of the baryon density of the early Universe.

6. Give a qualitative overview on the concept of Quantum Gravity and why that is relevant to understanding cosmology (you will have to consult outside sources for this one)