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Today in the History of Astronomy

April 14, 1629: The birth of Christaan Huygens

Today in the History of Astronomy

March 25, 1655: Christiaan Huygens discovers Titan

Did Titan form when two moons collided?

Robotic Spaceflight, Today in the History of Astronomy

Jan. 14, 2005: Huygens lands on Titan

Today in the History of Astronomy

Dec. 23, 1672: Saturn’s moon Rhea is discovered

Why do giant planet jet streams blow in opposite directions?

Robotic Spaceflight, Today in the History of Astronomy

Oct. 15, 1997: Cassini-Huygens launches

Organic molecules in Saturn’s rings originated from liquid water, scientists confirm

Robotic Spaceflight, Today in the History of Astronomy

Sept. 26, 2005: Cassini visits Saturn’s weirdest moon

Today in the History of Astronomy

Sept. 17, 1789: William Herschel discovers Mimas

Robotic Spaceflight, Today in the History of Astronomy

Sept. 15, 2017, Cassini’s Grand Finale

Today in the History of Astronomy

July 30, 1610: Galileo sees Saturn’s rings