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Concept Breadcrumbs

Preferred Term:

exosphere

Definition:
The outermost, or topmost, portion of the atmosphere. Its lower boundary is the critical level of escape, variously estimated at 500 to 1000 kilometers above the Earth's surface.
Concept Schemes:
NALT Full
Broader Concept:
URI:
https://lod.nal.usda.gov/nalt/212238
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RDF/XMLCreated 2014-03-20, last modified 2015-01-16