Wikidata facts
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- UTC date of spacecraft launch
- 1968-08-08
- Commons category
- Explorer 39
via Wikidata · CC0
Connections
Explorers Program
Entity
SECOR
Entity
Environmental Research Satellite
Entity
atmosphere
Entity
Earth
Concept
science
Entity
NASA
Concept
Wayback Machine
Entity
public domain
Entity
hertz
Entity
Greenwich Mean Time
Entity
solar cell
Entity
orbital period
Entity
apsis
Entity
Smithsonian Institution
Entity
Apollo 8
Entity
low Earth orbit
Entity
orbital inclination
Entity
rechargeable battery
Entity
Apollo 7
Entity