where did he study?
University of Leiden and Orange College, in Breda
Christiaan Huygens
His father sent Huygens to study law and mathematics at the University of Leiden, where he studied from May 1645 to March 1647. Frans van Schooten was an academic at Leiden from 1646, and also a private tutor to Huygens and his elder brother, replacing Stampioen on the advice of Descartes. Van Schooten brought his mathematical education up to date, in particular introducing him to the work of Fermat on differential geometry.

After two years, from March 1647, Huygens continued his studies at the newly founded Orange College, in Breda, where his father was a curator:
the valles marineris system on mars is 4 000 km long the width of UNANSWERABLE does it have any ice caps? Yes, two permanent polar ice caps what is its weather like? The seasons of Mars are the most Earth-like where is it located in our solar system? Fourth planet from the Sun does it have any natural satellites? UNANSWERABLE what is the earlier mentioned system? It is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly when was it discovered? In the 17th century, Galileo discovered that the Sun was marked with sunspots, and that Jupiter had four satellites in orbit around it and around 1704 the term "Solar System" first appeared in English what is the center of it? As the contracting nebula rotated faster, it began to flatten into a protoplanetary disc with a diameter of roughly 200 AU and a hot, dense protostar at the centre when was this system formed? 4.568 billion years ago was there any one other than the above mentioned person involved in its exploration? Christiaan Huygens, Edmond Halley, and Friedrich Bessel who was huygens? He was a Dutch physicist, mathematician, astronomer and inventor when was he born? 14 April 1629
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Christiaan Huygens [SEP] Student years
Constantijn Huygens was closely involved in the new College, which lasted only to 1669; the rector was André Rivet. Christiaan Huygens lived at the home of the jurist Johann Henryk Dauber, and had mathematics classes with the English lecturer John Pell. He completed his studies in August 1649. He then had a stint as a diplomat on a mission with Henry, Duke of Nassau. It took him to Bentheim, then Flensburg. He took off for Denmark, visited Copenhagen and Helsingør, and hoped to cross the Øresund to visit Descartes in Stockholm. It was not to be. While his father Constantijn had wished his son Christiaan to be a diplomat, it also was not to be.