Jupiter's Galilean Satellites
This is a Hubble Space Telescope 'family portrait' of the four largest moons of Jupiter, first observed by the Italian scientist Galileo Galilei nearly four centuries ago.
Located approximately one-half billion miles away (about 805 thousand kilometres), 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 spacecraft in the early 1980s.
Credit:
About the Image
NASA press release
NASA caption
NASA caption
| Id: | opo9535a |
| Type: | Collage |
| Release date: | 10 October 1995, 05:00 |
| Size: | 600 x 700 px |
About the Object
| Name: | Callisto, Europa, Ganymede, Io |
| Type: | • Solar System : Planet : Satellite |
Colours & filters
| Band | Telescope |
