Pioneer 10 – Ganymede
NASA's Pioneer 10 had its closest encounter with Jupiter on Dec. 3, 1973. It was the first spacecraft to obtain close-up images of Jupiter, and three of its largest moons: Ganymede, Callisto, and Europa. Seen here, Ganymede appears fuzzy and yellowish.
NASA
December 3, 1973
| Credit | NASA |
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NASA's Pioneer 10 had its closest encounter with Jupiter on Dec. 3, 1973. It was the first spacecraft to obtain close-up images of Jupiter, and three of its largest moons: Ganymede, Callisto, and Europa.
