Two icy moons of Jupiter, though neighboring and of similar size, exhibit radically different internal structures. A new study suggests this dichotomy stems from their very formation, ...

The energy to melt the rock in Io's mantle would come from tidal heating in the grip of Jupiter's gravitational field — Io moves around Jupiter on an eccentric orbit, and its distance from the ...

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

Jupiter now appears 11-percent larger and more than one and a half times brighter than it did back in April 2017, when it at its farthest point from the sun. Skip to main content Open menu Close menu ...

S cott Bolton’s first encounter with Io took place in the summer of 1980, right after he graduated from college and started a job at NASA. The Voyager 1 spacecraft had flown past this moon of Jupiter, ...

Jupiter sets record after 12 new moons discovered 00:14. Jupiter's dazzling auroras are hundreds of times brighter than those seen on Earth, new images from the James Webb Space Telescope reveal.

Jupiter is our solar system's biggest planet by far. It used to be twice as large: Study A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow ...

NASA’s Juno spacecraft has returned new images of Jupiter after its 66th close flyby as it enters the final year of its mission. The $1 billion spacecraft completed its latest close flyby on Oct ...

Jupiter’s icy moon Europa is suspected of harboring a vast ocean that may be capable of supporting life. The $5-billion Europa Clipper spacecraft is the largest interplanetary probe ever built ...

The energy to melt the rock in Io's mantle would come from tidal heating in the grip of Jupiter's gravitational field — Io moves around Jupiter on an eccentric orbit, and its distance from the ...