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Hermann Groeber was a German painter who was known throughout Germany as a portraitist and landscape artist.
Hermann Groeber gained early success as a self-employed painter. He joined the German Association of Artists, and after Ludwig Schmid-Reutte was appointed to Karlsruhe, Groeber took over his class of nude acts, which soon enjoyed great popularity.
Johannes Kepler was a German mathematician and astronomer who discovered that the Earth and planets move around the Sun in elliptical orbits.
Kepler created the three fundamental laws of planetary motion. He also did seminal work in optics and geometry, calculated the most accurate astronomical tables, and made many inventions and discoveries in physics on which further scientific discoveries by advanced scientists were based.
