Pioneer H
Pioneer H was 'n onbemande ruimtesending, as deel van die Pioneer-program, wat in 1974 gelanseer moes gewees het. Dit is nooit lanseer nie. Sou die sending wel plaasgevind het, sou die ruimtevlug as Pioneer 12 bekend gestaan het. Die naam is later gebruik vir die Pioneer Venus-projek.
Pioneer H (diagram), gebruik dieselfde ontwerp as Pioneer 10 en 11
Verwysings
| Eerste sendings |
|  Pioneer 11 by Saturnus |
|---|---|---|
| Latere sendings |
| |
| Venus sendings |
| |
| Sien ook |
| |
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