- How do we observe the life histories of galaxies?
- How did galaxies form?
- Why do galaxies differ?
- What are quasars?
- What is the power source for quasars and other active galactic nuclei?
- Do supermassive black holes really exist?
- What does QUASAR mean?
- Who is Maarten Schmidt?
- What is Cosmology?
- What is the Cosmological Principle?
Hint: Check Maarten Schmidt, Quasars, and Cosmology in Wikipedia.
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