Concepts, ideas, and facts that you should know:

Everything from the first two review sheets.

Clusters of galaxies: rich and poor.

Galaxy collisions and mergers.

The large-scale structure of the Universe: superclusters, filaments, sheets, and voids.

Radio galaxies, Seyfert galaxies, and quasars.

QSO absorption lines, gravitational lensing, and ``superluminal'' motion.

The Unified Model of Active Galactic Nuclei.

Theories of structure formation.

The expansion of the Universe.

The age of the Universe from Hubble's Law.

The Cosmological Principle.

The Cosmic Microwave Background.

Open, closed, and flat universes.

The critical density of the Universe.

The standard Big Bang model and Inflation.

The past and future evolution of galaxies and the Universe.