Biology, 23.02.2020 06:02, webbhlharryteach

Which did Kepler notice about planetary motion that caused him to propose Kepler's first law of orbital motion? (1 point)

The distance to the sun varies

Most planets have highly elliptical orbits.

The planets have circular orbits.

The distance between Mars and the sun is constant

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Which did Kepler notice about planetary motion that caused him to propose Kepler's first law of orbi...