World’s Strangest

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Volcanic Plumes over Io

The Galileo spacecraft captured this fantastic color composite image of a volcanic eruption on Jupiter’s moon Io. APOD explains: At the image top, over Io’s limb, a bluish plume rises about 140 kilometers above the surface of a volcanic caldera known as Pillan Patera. In the image middle, near the night/day shadow line, the ring shaped [...]