Question

Kepler was the first astronomer to look at the planet’s orbital __________. He discovered that these had a/an _________ shape.

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The heliocentric model is actually just a model for ___________, not our entire universe.

Answer 1

Kepler was the first astronomer to look at the planet’s orbital paths. He discovered that these had a/an elliptical shape.

The heliocentric model is actually just a model for the solar system, not our entire universe.