Orbits & Gravity

Connect orbital patterns to conservation principles and gravitational dynamics across multiple systems.

For self-study Level MIXED 4 demos ~50 min 4 required

A progression from descriptive orbital laws to dynamical causes, with enough depth for independent practice.

Instructions

Complete each required demo in sequence.

Keep one running notebook with:
- your prediction,
- one measured observable,
- one model-based inference.

Journey steps

  1. Kepler’s Laws: Patterns of Planetary Motion

    Required

    12 min

    Extract orbital regularities from period, shape, and area patterns.

  2. Conservation Laws: Energy & Momentum

    Required

    10 min

    Use energy/momentum conservation to explain trajectory changes.

  3. Binary Orbits: Dynamical Reasoning Lab

    Required

    16 min

    Infer mass relationships from barycentric motion and velocity signatures.

  4. Retrograde Motion: Apparent Longitude from Relative Motion

    Required

    12 min

    Explain apparent backward motion from relative orbital viewpoints.

Why this sequence?

Why this sequence?

Kepler supplies pattern language, conservation supplies mechanism, binary systems apply that mechanism to mass inference, and retrograde closes the loop with observer-centered apparent motion.