Question

Which did Kepler notice about planetary motion that caused him to propose Kepler’s first law of orbital motion?

Answer is the distance to the sun varies.

I do not understand it. Can you please explain? Thank you.

Answer 1

the distance of the sun varies because the earth has an elliptical orbit same reason some months are longer.

Step-by-step explanation:

Answer 2

He is saying that the distance to the sun affects the orbit.

Step-by-step explanation:

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