bn:01214993n
Noun Concept
Categories: Radio spectrum, Earth observation satellites, Spacecraft stubs
EN
Earth observation satellite transmission frequency  Earth observation satellites transmission frequencies  Earth observation satellite transmission frequencies
EN
The earth is constantly monitored by several satellites operating in the earth exploration-satellite service or space research service. Wikipedia
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Sources
EN
The earth is constantly monitored by several satellites operating in the earth exploration-satellite service or space research service. Wikipedia