About
These photos of the four Galilean satellites of Jupiter were taken by NASA Voyager 1 during its approach to the planet in early March 1979. Io, Europa, Ganymede, and Callisto are shown in their correct relative sizes. http://photojournal.jpl.nasa.gov/catalog/PIA00012 — NASA JPL · 1996. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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