The photos of a silhouetted, dusty red sphere pockmarked by massive grayish volcanoes prompted awe online among astronomers and other stargazers, some of whom called the images "magnificent" and "beautiful."
We are looking for how often they erupt, how bright and hot they are, how the shape of the lava flow changes, and how Io's activity is connected to the flow of charged particles in Jupiter's magnetosphere," Juno's principal investigator Scott Bolton said in a statement.
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