Moons

Human Spaceflight, Today in the History of Astronomy

May 4, 1967: Surveyor 3 last contact

Today in the History of Astronomy

May 1, 1949: The discovery of Nereid

Today in the History of Astronomy

April 30, 1998: The discovery of Caliban and Sycorax

Today in the History of Astronomy

March 12, 2008: Cassini at Enceladus

Today in the History of Astronomy

Jan. 11, 1787: William Herschel discovers two moons of Uranus

Today in the History of Astronomy

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

Today in the History of Astronomy

Oct. 26, 2004: Cassini at Titan

Today in the History of Astronomy

Oct. 25, 1671: Iapetus is discovered

Solar System

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

Today in the History of Astronomy

Aug. 28, 1993: An asteroid harbors a surprise