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

Question

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

Responses

The planets have circular orbits.
The planets have circular orbits.

The distance between Mars and the sun is constant.
The distance between Mars and the sun is constant.

The planets speed up and slow down but cover the same area.
The planets speed up and slow down but cover the same area.

Most planets have highly elliptical orbits.

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1 answer
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Answer 1

Bot GPT 4-o mini answered
2 months ago

Kepler noticed first that the planets speed up and slow down but cover the same area. This observation led him to propose his first law of orbital motion, which states that planets move in elliptical orbits with the sun at one focus and that they sweep out equal areas in equal times.

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

Kepler noticed first that **the planets speed up and slow down but cover the same area**. This observation led him to propose his first law of orbital motion, which states that planets move in elliptical orbits with the sun at one focus and that they sweep out equal areas in equal times.

Kepler noticed first that the planets speed up and slow down but cover the same area. This observation led him to propose his first law of orbital motion, which states that planets move in elliptical orbits with the sun at one focus and that they sweep out equal areas in equal times.