Jupiter’s moon Io may have been volcanically active ever since it was born
The fiery moon has been a hellscape for roughly 4.6 billion years
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 below the boundary between the moon’s light and dark sides.
JPL-Caltech/NASA, SwRI, MSSS