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A rare triple moon shadow event on Jupiter

A rare triple moon shadow event on Jupiter

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NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

A rare triple moon shadow event on Jupiter
The Hubble Space Telescope caught Europa, Callisto, and Io transiting Jupiter and casting three shadows simultaneously on January 24, 2015. These events can be witnessed only once or twice per decade, near Jupiter's equinoxes. Because of the resonance of the orbits of Io, Europa, and Ganymede, it is not presently possible for all four moons to cast shadows on Jupiter at the same time.

Most NASA images are in the public domain. Reuse of this image is governed by NASA's image use policy.

Original image data dated on or about January 24, 2015

Explore related images: Jupiter's moons, astronomy and astrophysics spacecraft, Io, Hubble Space Telescope, pretty pictures, Europa, Callisto, many worlds, optical telescopes, Jupiter

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