Exospheres
Last Updated: January 2, 2026 at 12:30 PM
Scrabble:22 ptsWWF:22 pts10 letters
Definition of Exospheres
noun
- The uppermost layer of a planet's atmosphere
- 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', Cassini Solstice Mission, JPL, Mar. 02, 2012)"
Anagrams of Exospheres
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