
Introduction to Astrophysics
The Physics Demonstration in the Sky
Educational · 1 June 2020 · 32 min The Great Courses Signature Collection
Available on Prime Video
S1, E4: The connection between Isaac Newton's laws of motion and the earlier laws of planetary motion discovered empirically by Johannes Kepler; Kepler's third law is the ideal method for measuring the mass of practically any phenomenon in astrophysics.
Educational · 1 June 2020 · 32 min