Pleases do not copy and paste, explain in your own words. Explain the phenomena of white dwarf novae and supernovae. Use the uniformity of white dwarf supernova light curves to determine distances to other galaxies. Describe the structure of the Milky Way galaxy, including its components the bulge, the disk, the stellar halo, and the dark matter halo. Document the process by which gas is recycled and enriched via star formation and evolution..