89.9 MB (3.3 MB compressed)
4579 x 6866 pixels
38.9 x 58.2 cm ⏐ 15.3 x 22.9 in (300dpi)
MARK GARLICK / SCIENCE PHOTO LIBRARY MARK GARLICK / SCIENCE PHOTO LIBRARY
Io is one of the four Galilean moons of Jupiter, the closest to the planet. Its surface is highly volcanic, with very few impact craters.
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