NASA / ESA AND G. BACON, L. FRATTARE, Z. LEVAY, AND F. SUMMERS (STSCI / AURA) / SCIENCE PHOTO LIBRARY NASA / ESA AND G. BACON, L. FRATTARE, Z. LEVAY, AND F. SUMMERS (STSCI / AURA) / SCIENCE PHOTO LIBRARY
This simulation illustrates the orbits and positions of Jupiter s four largest moons on January 24, 2015 during a rare triple-moon transit where three of Jupiter s largest moons were seen parading across the banded face of the gas giant planet. The three moons are Europa, Callisto, and Io. The animation starts with a polar view of Jupiter and its moons - including the moon Ganymede, not seen in the transit - and tilt down to the orbital plane of the moons. The satellites move from left to right across the frame, casting shadows onto the face of Jupiter.
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