Explain why we see the Milky Way as a faint band of light stretching across the sky.
Explain where in a spiral galaxy you would expect to find globular clusters, molecular clouds, and atomic hydrogen.
Describe several characteristics that distinguish population I stars from population II stars.
Briefly describe the main parts of our Galaxy.
Describe the evidence indicating that a black hole may be at the center of our Galaxy.
Explain why the abundances of heavy elements in stars correlate with their positions in the Galaxy.
What will be the long-term future of our Galaxy?