Ticho Brague (1546 - 1601).
Ticho Brague was the greatest astronomer-observer, an outstanding scientist and a designer of astronomic tools. He founded the first European astronomic centre, where the great amount of the work was carried out during 20 years. For many people from different countries this observatory became a school of practice. The results of his work got to genius theorist Johann Kepler, who formulated the laws of the planets movement.
The astronomical observations of Ticho Brague seemed a pastime for his contemporaries, appeared to be a basis of the modern law of gravitation.