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Timeline for answer to Angular Momentum and Kepler's Second Law by Bill N

Current License: CC BY-SA 3.0

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Dec 25, 2015 at 18:22 comment added Bill N There are other planets which exert torques on each other. The torque effects are very small on a planet (large mass), but we use them to boost small mass satellites to different orbits. That's how we got the Voyagers and New Horizons out to Pluto and beyond.
Dec 25, 2015 at 12:40 comment added Rations @BillN Hi, Bill. Could you clarify why the angular momentum remains constant to first order? Assuming the planets are of ideal shape, is the constancy of angular momentum not exact?
Dec 22, 2015 at 16:21 vote accept Fiery Phoenix
Dec 22, 2015 at 4:08 comment added Fiery Phoenix Not enough points on Physics SE to upvote, but thanks again for the details! That was where I initially went wrong. I had assumed the increases/decreases were additive (which is sort of what it sounds like when described qualitatively).
Dec 22, 2015 at 4:00 history answered Bill N CC BY-SA 3.0