Scientists can say two things with certainty about Io. First, this moon of Jupiter is the most volcanic object in the known universe. Its surface is festooned with so many lava-spewing calderas ...

Jupiter’s moon Io may have been volcanically active throughout its life. In this image of Io, taken by NASA’s Juno spacecraft in 2023, a bright volcanic plume can be seen on the left, just ...

Jupiter's super-volcanic moon, Io, boasts grand, meandering dunes formed through unconventional processes. Unlike on Earth, these features are the result of lava flows beneath the moon's surface.

The third biggest moon in Jupiter’s “Jovian” system, Io is no stranger to the rumbles and roars of volcanoes. That’s because it’s richer in volcanic activity than any other moon in our solar system, ...

But the moon’s wild volcanic activity wasn’t detected until Voyager 1 flew by Jupiter and its moons in 1979, revealing Io’s dynamic surface that resembled a pepperoni pizza, Bolton said.

doesn’t show on Jupiter’s moon Io. discuss Io, Europa and other members of the Jupiter system. Dr. John Spencer, of the Lowell Observatory, Flagstaff, Ariz., will describe some possible ...

After making the closest Io flyby of any spacecraft in more than 20 years, NASA's Juno probe returned amazingly detailed imagery that will help scientists discover the source of the small moon's ...

Monitoring Io's volcanic activity, which have likely pockmarked the world for most (if not all) of its 4.57 billion years of existence, can help scientists learn about how the eruptions shaped the ...

Because Io is so close to its massive host planet, the moon is subjected to a tremendous gravitational pull as it orbits Jupiter once about every 42 hours, according to the Planetary Society.

Moon-quakes first measured by the Apollo astronauts have been attributed to these tides. The tides that Jupiter raises on Io, however are powerful enough to induce sufficient friction in that moon ...

Assuming Io initially held some 20,000,000,000,000,000,000,000 (or 20 sextillion) tons of sulfur, the amount it’s lost so far leaves roughly 200 quintillion to 1.2 sextillion tons of sulfur ...

Io on left as the volcanic moon orbits Jupiter, on right. Credit: NASA / JPL-Caltech / SwRI / MSSS / Kevin M. Gill CC BY 3.0 Io as viewed from 22,135 miles (35,623 kilometers) away.