Vanguard 3
E409859
UNEXPLORED
Vanguard 3 was an early American scientific satellite launched in 1959 to study Earth's magnetic field, radiation environment, and upper atmosphere as part of the Vanguard program.
Referenced by (2)
| Subject (surface form when different) | Predicate |
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Vanguard series
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hasPart |
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Vanguard program
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launchedSatellite |