Exosphere - What does it mean?
exosphere | |
has no English definition.
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)
is likely misspelled.
has no English definition.