For years, astronomers have celebrated every hint of an ocean on a distant world as a potential foothold for life. Now a new wave of modeling argues that most of those supposed seas are illusions, and ...

New data from NASA's Juno orbiter reveals Jupiter is slightly smaller and more 'squashed' than scientists previously thought.

"What makes the event even more extraordinary is that it did not involve a single volcano, but multiple active sources." ...

The volcanic hot spot is larger than Lake Superior, spewing eruptions six times the total energy of all of the world's power plants.

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.

On Jan. 10, Jupiter will shine at its brightest and largest in 2026, rising at sunset and glowing in the sky until sunrise The gas giant will reach a magnitude of -2.7, making it the fourth brightest ...

This weekend, Jupiter reaches opposition — its closest and brightest point of the year. Rising at sunset in the east and shining all night long, it will dominate the sky with a steady white brilliance ...

Collaborative work by amateur and professional astronomers has helped to resolve a long-standing misunderstanding about the composition of Jupiter's clouds. Instead of being formed of ammonia ice -- ...