geocorona


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Related to geocorona: Lagrangian point

ge·o·co·ro·na

 (jē′ō-kə-rō′nə)
n.
The ultraviolet light emanating from the outermost region of the earth's atmosphere, consisting chiefly of sunlight absorbed and then reemitted from hydrogen atoms.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

geocorona

(ˌdʒiːəʊkəˈrəʊnə)
n
(Physical Geography) the outer layer of the earth's atmosphere
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Translations
References in periodicals archive ?
* They believe the geocorona spreads all the way to the Moon
This uppermost layer, until 13000 km observable from space as the geocorona, extends up to 100000 km.
-- Discoveries: plasmaspheric shoulders and notches, proton auroras in unexpected places, surprisingly slow plasmasphere rotation, a hot oxygen geocorona and a secondary interstellar neutral atom stream.