Io. Image credit: NASA /
JPL-Caltech, via the
The most volcanically active place is out-of-this-world!
Io might seem like an unlikely place to find volcanoes. Yet when Voyager 1 visited this tiny moon of Jupiter, it found hundreds of volcanic calderas and an active eruption reaching 300 kilometers into space! Why is such a tiny, far off world such a hotbed for volcanism? Read this month’s column to find out! [PDF]