6:04
Mercury: The Innermost Planet
11:39
History of Astronomy Part 1: The Celestial Sphere and Early Observations
19:08
Kepler's Third Law of Planetary Motion Explained, Physics Problems, Period & Orbital Radius
7:01
History of Astronomy Part 3: Copernicus and Heliocentrism
16:36
The Life and Death of Stars: White Dwarfs, Supernovae, Neutron Stars, and Black Holes
8:25
Copernicus, Galileo, and the Catholic Church
1:02:35
The Paradoxes of Time Travel
15:48