Three of Jupiter’s largest moons – Callisto, Europa and Io – were captured by the Hubble space telescope in January travelling across the gas giant’s surface together.
To see the three moons transiting the face of Jupiter is rare – it happens about twice every 10 years. Ganymede, the largest of Jupiter’s moons, is missing from the show because it was too far away at the time.
Katherine Kizilos is a staff writer at Cosmos.
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