Tycho Brahe

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Monument of Tycho Brahe and Johannes Kepler in Prague
Monument of Tycho Brahe and Johannes Kepler in Prague

  Tycho Brahe ?, born as Tyge Ottesen Brahe, (lived December 14 1546October 24 1601), was an astronomer from Denmark who built a big observatory called Uraniborg on a place called Hven in Denmark. He discovered that the universe besides the solar system was always changing. Johannes Kepler was his helper.