Johannes Kepler: The Laws of Planetary Motion

Kepler was a 17th-century German mathematician and astronomer.
He discovered that planets move in elliptical, not circular, orbits.
His First Law defined the elliptical paths with the Sun at one focus.
The Second Law showed planets sweep equal areas in equal times.
The Third Law linked orbital period to a planet’s distance from the Sun.
Kepler used Tycho Brahe’s precise observations to shape his theories.
His laws explained planetary motion more accurately than Ptolemy or Copernicus.
They laid the groundwork for Isaac Newton’s theory of gravity.
Kepler’s work united physics, astronomy, and mathematics in new ways.
His insights reshaped humanity’s understanding of the solar system forever.