Webb just spotted a carbon-rich moon factory 625 light-years away, revealing how moons like ours may have first taken shape.

The Moon passes 5° north of Jupiter at 9 A.M. EDT. Just six percent illuminated by this evening, you can try to spot the young crescent Moon hanging above the gas giant in the western sky after sunset ...

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing to ...

We humans might grow larger as we move from early life to adulthood, but Jupiter has done the opposite. New research offers a snapshot of what the gas giant would have looked like at the beginning, ...