Catalog · The Early Universe Lecture 13 of 23 Lecture 13: Non-Euclidean Spaces: Spacetime Metric and Geodesic Equation ← Previous Lecture 12: Non-Euclidean Spaces: Open Universes and the Spacetime Metric Next → Lecture 14: The Geodesic Equation ✓ Mark complete Materials Transcript (PDF) ↗ transcript