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bn:03845000n
Noun Named Entity
Categories: Spacecraft launched in 1964, 1964 in spaceflight, Passive satellites, Spacecraft launched in 1960, Communications satellites in low Earth orbit
EN
Project Echo  Echo 2  Echo  Echo 1  Echo communications satellite project
EN
Project Echo was the first passive communications satellite experiment. Wikipedia
Definitions
Relations
Sources
EN
Project Echo was the first passive communications satellite experiment. Wikipedia
The first passive communications satellite experiment Wikipedia Disambiguation
First passive communications satellite experiment Wikidata
IS A
satellite
spacecraft
balloon satellite
HAS INSTANCE
Echo 1
OPERATOR
National Aeronautics and Space Administration
Wikipedia
EN
Project Echo
Wikidata
EN
Project Echo
Wikipedia Redirections
EN
Echo (satellite), Echo 1, Echo 2 (balloon), Echo communications satellite project, Echo II (balloon), Echo project, Echo satellite, Echo satellites

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