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

A new theory explains how dozens of mysterious planet pairs discovered by the James Webb Space Telescope, dubbed "JuMBOs," ...

The communications lag between Earth and Jupiter means missions to Europa will need to be smart to deal with problems on ...

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 ...

The nature of dark matter has been a hotly debated topic for decades. If it’s a heavy, slow moving particle then it’s just ...

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

Humankind accomplished new feats in space this year, including scooping up some of the moon’s farside and launching a probe to Jupiter’s moon Europa.

NASA's Great Observatories—the Hubble, Spitzer, Compton, and Chandra space telescopes—have revealed some amazing things about the universe. In addition to some of the deepest views of the universe ...

New analysis of Voyager 2 observations shows that the craft arrived amid gusty solar wind, muddying our ideas about the giant ...

As the largest planet in our Solar System, Jupiter's grandeur is visible to the naked eye and through simple telescopes, ...

Jupiter reaches opposition; meanwhile, the star Canopus shines bright and the constellation Pictor offers many gems to view.

Axel Bleiler, 3, of Jupiter has undergone chemotherapy and radiation treatment for rhabdomyosarcoma since the spring, when an ...