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Script
Orbits and Kepler's third law
Gravitation between bodies (s.G, body.gravitates): circular planets give T²/r³ constant, a slow comet gives an ellipse and conserves r·v.
Orbits: a Planet and a Comet
A fixed sun, a planet on a circular orbit and a comet that starts too slowly and falls in on an ellipse: r v and ½v² − GM/r stay constant for each.
Orbits: a Planet and a Comet
A fixed sun, a planet on a circular orbit and a comet that starts too slowly and falls in on an ellipse: r v and ½v² − GM/r stay constant for each.
From the community
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