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Today in the History of Astronomy

Oct. 26, 2004: Cassini at Titan

Today in the History of Astronomy

Oct. 25, 1671: Iapetus is discovered

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

Webb spots a new, tiny moon orbiting Uranus

Today in the History of Astronomy

Aug. 17, 1877: Asaph Hall discovers Phobos

Today in the History of Astronomy

Aug. 16, 1898: Phoebe makes an appearance

Meet 2024 PT5, Earth’s temporary mini-moon

Saturn’s moon Mimas, floating above the planet’s rings, might conceal a liquid ocean beneath its surface.

Saturn’s moon Mimas may hide a surprisingly young ocean

New moons of Uranus and Neptune discovered