What did Johannes Kepler discover while studying Mars that led to his first law of orbital motion? (1 point) Responses The distance between Mars and the sun is constant. The distance between Mars and the sun is constant. The planets have circular orbits. The planets have circular orbits. The distance to the sun varies The distance to the sun varies Most planets have highly elliptical orbits
The correct answer is: The planets have elliptical orbits.
Johannes Kepler discovered that the planets have highly elliptical orbits while studying Mars. This discovery ultimately led to his formulation of the first law of orbital motion, also known as Kepler's First Law. To obtain this answer, you can refer to Kepler's body of work, specifically his book "Astronomia Nova" published in 1609, where he presented his findings and laws of planetary motion.
