Testing Galaxy Formation and Dark Matter with Low Surface Brightness
  Galaxies
  Galaxies are the basic structural element of the universe; galaxy formation
theory seeks to explain how these structures came to be. I trace some of the
foundational ideas in galaxy formation, with emphasis on the need for
non-baryonic cold dark matter. Many elements of early theory did not survive
contact with observations of low surface brightness galaxies, leading to the
need for auxiliary hypotheses like feedback. The failure points often trace to
the surprising predictive successes of an alternative to dark matter, the
Modified Newtonian Dynamics (MOND). While dark matter models are flexible in
accommodating observations, they do not provide the predictive capacity of
MOND. If the universe is made of cold dark matter, why does MOND get any
predictions right?
