Abstract
Thaddaeus Hagecius († 1600), astronomer, botanist, physician and university professor. He was among the European scientific elite in the late 16th century, where he ranked by their astronomical writings (especially Dialexis de novae et prius incognitae stellae apparitione, 1574) and a translation of herbals Andrea Pietra Matthioli from Latin into Czech.
He was the personal physician of Emperor Maximilian II. and his merit was the arrival Tycho de Brahe to the court of Emperor Rudolf II. in Prague. Thanks to his numerous contacts with European intellectuals, the Prague University became part of a broad international scholarly networks.