Large hailstones made of ammonia may explain why the gas is missing from large pockets of Jupiter's atmosphere.

NASA's Juno revealed mushballs on Jupiter, reshaping our understanding of deep, violent gas giant storm systems.

NASA's Juno spacecraft made a close flyby of Jupiter moon lo. See an animation of the images the probe captured created by ...

Scientists spent four years challenging an out-of-the-box theory that ammonia and water form slushy hailstones on the gaseous planet. Looks like it’s true.

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

NASA's Juno spacecraft has resumed normal operations after entering safe mode twice during its 71st close approach to Jupiter on April 4.

This asteroid is bigger than scientists anticipated, about 5 miles long and 2 miles wide at its widest point — resembling a ...

NASA's Lucy spacecraft recently got an up-close look at a strange peanut-shaped space rock floating through the cosmos in the ...