50.0 MB (1,017.5 KB compressed)
5115 x 3417 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
MARK GARLICK / SCIENCE PHOTO LIBRARY MARK GARLICK / SCIENCE PHOTO LIBRARY
Io is one of the four Galilean moons of Jupiter, the closest one to the planet. Its surface is volcanic and relatively smooth. Here the moon is seen with Jupiter behind it, and the Sun off the right causing a lens flare.
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