Relativistic Cosmology

• radiation in the universe
• Friedmann revisited

Geometry of the Universe

• cosmic curvature
• possible geometries illustrated
• link between geometry and fate

Solving the Friedmann Equations

• general properties
• ingredients for solutions
• worked solution: matter-dominated universe

Major Cosmic Epochs

• radiation-dominated
• matter-dominated
• curvature-dominated
• vacuum-dominated