There's no known historical figure named "Heinrich Kepler". It's likely you're thinking of Johannes Kepler, a renowned German astronomer and mathematician who lived from 1571 to 1630.

Johannes Kepler made groundbreaking discoveries about planetary motion, including:

* Kepler's Laws of Planetary Motion: These three laws describe the elliptical orbits of planets around the Sun, the varying speed of planets in their orbits, and the relationship between the orbital period and the distance of a planet from the Sun.

* Contributions to optics: He made significant contributions to understanding the workings of the eye and the properties of light.

If you're interested in learning more about Johannes Kepler and his work, feel free to ask!