Question
Kepler studied planetary motion. What did he observe that caused him to propose his first law or orbital motion?(1 point)
Responses
The distance of the planet from the sun varies during the orbital period.
The distance of the planet from the sun varies during the orbital period.
The distance between Earth and the sun remains constant during the orbital period.
The distance between Earth and the sun remains constant during the orbital period.
Most planets have elliptical orbits.
Most planets have elliptical orbits.
All planets have orbits that are circular.
Responses
The distance of the planet from the sun varies during the orbital period.
The distance of the planet from the sun varies during the orbital period.
The distance between Earth and the sun remains constant during the orbital period.
The distance between Earth and the sun remains constant during the orbital period.
Most planets have elliptical orbits.
Most planets have elliptical orbits.
All planets have orbits that are circular.
Answers
GPT-5 mini
The distance of the planet from the sun varies during the orbital period.