What is orbital period?, Speed, Time to complete one orbit, Distance, all above, What is orbital velocity?, Speed in orbit, Time in orbit, Orbit shape, mass of orbit, What is orbital distance?, Time, Speed, Distance from the center of the planet, energy, If orbital distance increases, orbital period usually becomes:, Shorter, The same, no change, Longer, Scientists use mathematical models to:, Change gravity, Predict orbits, Stop satellites, non above.

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