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HubbleSite Hubble Photo Gallery of Jupiter's Galilean Satellites

  • Thread starter Space Telescope Science
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Space Telescope Science

This is a Hubble telescope "family portrait" of Jupiter's four largest moons.

Located approximately a half billion miles away, the moons are so small that, in visible light, they appear as fuzzy disks in the largest ground-based telescopes. Hubble can resolve surface details seen previously only by the Voyager space probes in the early 1980s. While the Voyager probes provided close-up snapshots of the satellites, Hubble can now follow changes on the moons and reveal other characteristics at ultraviolet and near-infrared wavelengths.

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