The James Webb Space Telescope reveals active volcanoes on Io in unprecedented detail thanks to an innovative technique.

On March 8, 1979, NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. [‘On This Day in Space’ Video Series on Space.com] Before Voyager 1 flew by Io, scientists believed the ...

The volcanic hot spot is larger than Lake Superior, spewing eruptions six times the total energy of all of the world's power plants. Reading time 3 minutes Jupiter’s moon Io is covered in hundreds of ...

Jupiter’s volcanic moon has always felt like a place that tests your sense of what a world can be. Its surface glows with hundreds of active hot spots. Its mountains rise higher than Everest. Its lava ...

"It's like estimating the brightness of a bonfire by observing only the flames and not the surrounding embers." When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

The next full moon of the summer will be here before we know it as the Sturgeon Moon will be visible on August 9. If you’re looking to view this full moon at its apex, it will reach its peak ...

Recently, I posted two lists of Moon facts, each containing 10 that were pretty cool. They’ll also help you answer questions about our lone natural satellite. You’ll find them here and here. Well, ...

The original version of this story appeared in Quanta Magazine. Scott 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 ...

Discovered by Galileo in 1610, Io has since become one of the most fascinating objects in planetary science. Orbiting just 350,000 km above Jupiter, Io experiences gravitational forces 300% stronger ...

"You would see glowing lava flows all over the place, and maybe the odd volcanic eruption." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Io, one of the four Galilean moons of Jupiter, as seen by the Galileo probe, circa 1997. (Photo by Space Frontiers/Hulton Archive/Getty Images) New data from NASA’s $1.2 billion Juno spacecraft — now ...

New data from the orbiter has unveiled some of the treacherous conditions of not only Jupiter, but its moon Io, the most volcanic body in the solar system. The findings, which come after Juno has ...