The moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and ...

Discovered by Galileo in 1610, Io has since become one of the most fascinating objects in planetary science. Orbiting just ...

NASA scientists have sought to understand planet Jupiter, the gas giant whose mass is more than the rest of the planets in ...

The result may have been comparable to Jupiter's moon Io, the most volcanic body in the solar system. Early in the history of the solar system, a massive protoplanet plowed into a young Earth.

"We suggest that the processes which formed the lunar maria several billion years ago are still present and active today." ...

The Voyager 1 spacecraft had flown past this moon of Jupiter, catching the first glimpse of active volcanism on a world other than Earth. Umbrella-shaped outbursts of magmatic matter rocketed into ...

flying over the same part of the moon each time. Though Io is not much larger than Earth's own moon, the two celestial bodies couldn't be more different. While our moon is relatively calm ...

Meanwhile, on Jupiter's moon Io, the most volcanically active world ... degrees Fahrenheit colder than the areas around it. Unlike Earth's hurricanes, which usually form near the equator and ...