13:22
how to solve a more challenging projectile problem
28:47
Episode 21: Kepler's Three Laws - The Mechanical Universe
1:17:16
Sky Observers Hangout: Observing Jupiter Live
12:42
Kepler's Laws
16:33
history of the speed of light and how its speed was determined
36:05
Space Flight: The Application of Orbital Mechanics
16:40
How the Bizarre Path of Mars Reshaped Astronomy [Kepler's Laws Part 1]
1:00:18