Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

NASA and ESA’s Hubble Space Telescope has been observing the outer planets through a program called OPAL (Outer Planet ...

Saturn's rings are long thought to be up to 400 million years old but new data finds they could be around 4.5 billion years old.

Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

Instead of being a youthful 400 million years old as commonly thought, the icy, shimmering rings could be around 4.5 billion ...

This is a montage of Hubble Space Telescope views of our solar system's four giant outer planets: Jupiter, Saturn, Uranus, and Neptune, each shown in enhanced color. The images were taken over nearly ...

Saturn's famous rings are about to disappear. No, not literally – that isn't projected to happen for hundreds of millions of years. But for astronomers and stargazers using ground-based ...

Encountering Neptune in 1989, NASA's Voyager mission completed humankind's first close-up exploration of the four giant outer ...

This is a montage of NASA/ESA Hubble Space Telescope ... has revealed information about Saturn’s “spokes,” which are dark patches in the planet’s rings that appear in a seasonal pattern ...

Hubble’s OPAL program tracks Jupiter, Saturn, Uranus, and Neptune Seasonal and atmospheric changes revealed over a decade Key insights into gas giants’ weather systems shared by NASA ...

It has to do with Saturn, potentially one of the most recognizable planets in our solar system thanks to its rings. According to NASA, those rings are believed to be made up of rocky and icy ...

A NASA Hubble Space Telescope observation program ... Major changes happen when Saturn progresses into the next season. Saturn's mysteriously dark ring spokes, which slice across the ring plane ...