The TROJAN Test

Why watch

This MinutePhysics video explains the "Trojan test" as an alternative method to determine whether one celestial body is truly orbiting another. Henry Reich explains why the common barycenter test has limitations and introduces Trojan points (L4 and L5 Lagrange points) as a more reliable indicator of orbital relationships. The video covers the stability of Trojan points and demonstrates the test on the Earth-Moon system. Ideal for physics enthusiasts, students, and anyone curious about orbital mechanics fundamentals.