Visible in the early-morning sky today, Saturn’s two-toned moon Iapetus reaches superior conjunction just 1.4′ due south of Saturn. The proximity makes the now-11th-magnitude moon easier to find, as ...

Skywatchers in central Wisconsin can expect a stunning week ahead, with planetary pairings, moon phases and celestial ...

Journey 1.5 billion kilometres to Saturn's most bewildering moon: Iapetus. This world of stark contrasts features a divided ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...

Over the last few years, the term “Goldilocks Zone” has become widely used to describe the range of distances from a star ...

Saturn’s two-faced moon Iapetus reaches its greatest western elongation today. At western elongation, the moon’s lighter hemisphere is turned toward Earth, making it brightest and easiest to ...

Iapetus, a moon of Saturn, has baffled astronomers since the early days of telescopic observation. It seemed to vanish and reappear without explanation, earning it a mythical status in early ...

The moon is named Iapetus after the Greek god Iapetus, who is a son of Uranus and Gaia, a brother to Kronus, and the father of Atlas and Prometheus. As the father of Prometheus, ...

On October 25, 1671, Giovanni Domenico Cassini, an Italian astronomer, mathematician, astrologer and engineer, discovered Iapetus (pronounced eye-app-eh-tuss), one of Saturn’s many moons. He ...

Saturn's moon, Iapetus, imaged by NASA's Cassini spacecraft in September 2007. (Credit: NASA/JPL-Caltech/Space Science Institute) We recently explored Saturn’s moon, Pan, and its unique, food-like ...