exosphere

1. The uppermost layer of a planet's atmosphere

   Exosphäre

   экзосфе́раekzosféra

   екзосфераekzosfera

   the outermost atmospheric layer

2. An extremely thin atmosphere, as on Saturn's moon Dione

   "Scientists weren't even sure Dione would be big enough to hang on to an exosphere" ('Cassini Detects Hint of Fresh Air at Dione', , JPL, Mar. 02, 2012)

1. The exosphere is the outermost layer of our atmosphere.

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2. The thermosphere is located above the mesosphere and below the exosphere.

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3. Air atoms and molecules are constantly escaping to space from the exosphere.

   deEs entweichen beständig Atome und Moleküle der Luft aus der Exosphäre in den Weltraum. — Pfirsichbaeumchen

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