A single moon shadow transit Jupiter is exciting enough, but on August 15, 2021, there was a rare triple transit of Europa (II), Ganymede (III), and Callisto (IV) paired with a double shadow transit of Ganymede and Europa. In addition, Ganymede occulted Europa while Io appeared in partial eclipse (center frame) off the planet's limb. The prominent, pale pink vortex dubbed Oval BA is also shown. North is up and "s" indicates shadow. For more images click the link.
“Jupiter comes to opposition on August 20th, when it will shine brighter and closer than at any other time this year. With nights starting earlier and cooler temperatures arriving, there’s no better time to make the most of the planet. Roughly every 13 months Earth comes from behind and passes Jupiter in a planetary horse race that's been going on for billions of years. And the prize? Spectacular views of the solar system's largest planet from dusk till dawn. ...”
Perseus Freeing Andromeda by Piero di Cosimo (c. 1515)
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