(See also Review Sheets for Exams #1 and #2)

Milky Way Galaxy, Star Gauging, Disk, Halo, Nuclear Bulge, Spiral Arms
Disk Component, Spherical Component, Population I, Population II
Stellar Association, Open Cluster, Globular Cluster
Cluster HR Diagrams, Turnoff Point
Differential Rotation, Velocity Curve, Dark Matter

Galaxy Names, Messier Numbers, Andromeda Galaxy (M31), Magellanic Clouds (LMC, SMC), NGC Numbers
Galaxy Distances, Cepheid Variables, Period-Luminosity Law, Distance Indicators
Hubble Law, Redshift, Hubble Constant, Look-Back Time
Galaxy Classification, Tuning Fork Diagram, Ellipticals, Normal Spirals, Barred Spirals, Irregulars
Clusters of Galaxies, Rich Clusters, Poor Clusters, The Local Group

Peculiar Galaxies, Radio Galaxies, Double-Lobed Radio Galaxies, Synchrotron Radiation, Thermal Radiation, Head-Tail Radio Galaxies, Double Exhaust Model
Active Core Galaxies, Seyfert Galaxies, BL Lac Objects, Active Galactic Nuclei, Massive Black Hole, Quasars

Cosmology, Homogeneity, Isotropy, Universality, Cosmological Principle, Expanding Universe
Steady State Theory, Continuous Creation of Matter
Big Bang Theory, Primeval Fireball, 3-Degree Cosmic Background Radiation
Steady State Universe, Open Universe, Closed Universe, Oscillating Universe, Big Crunch
Cosmological Tests, Critical Density, Dark Energy, Age of the Universe