exosphere
See also: exosphère
English edit
Etymology edit
Pronunciation edit
Audio (UK) (file)
Noun edit
exosphere (plural exospheres)
- 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)
Translations edit
the uppermost layer of a planet's atmosphere
|