New images of Jupiter moon Io show massive volcanoes, a scarred landscape and lava flows. Jupiter has a total of 92 moons, and Io is slightly larger than Earth’s moon.

A new finding of ammonia on the icy surface of Jupiter's moon Europa could have important implications for the search for ...

"Textbooks will need to be updated," study co-author Yohai Kaspi, a planetary scientist at the Weizmann Institute of Science ...

Baby stars, teenage planets, and disappearing icebergs are all featured this week. Plus, a look back at a New Horizons image of Jupiter and Io, and a strange, elongated cloud on Mars.

Asharq Al Awsat Jupiter, without a doubt, is the biggest planet in our solar system. But it turns out that it is not quite as large - by ever so small an amount - as scientists had previously thought.

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

Jupiter’s swirling storms have concealed its true makeup for centuries, but a new model is finally peeling back the clouds.

Jupiter and Saturn host strikingly different polar storms, despite being similar giant planets, and scientists have long wondered why. New simulations suggest the answer may lie deep below the clouds.

Over the years, passing spacecraft have observed mystifying weather patterns at the poles of Jupiter and Saturn. The two planets host very different types of polar vortices, which are huge atmospheric ...