Born in The Hague, Christiaan Huygens was the second son of Constantijn Huygens, a well-placed official who was secretary to the princes of Orange.
Christiaan Huygens (April 14, 1629 – July 8, 1695), was a Dutch mathematician, astronomer, and physicist best known for his astronomical discoveries, including the rings of the planet Saturn and Saturn's largest satellite, Titan.