exosphere
noun
exo·sphere
ˈek-sō-ˌsfir 
: the outer fringe region of the atmosphere of the earth or a celestial body (such as a planet)
Examples of exosphere in a Sentence
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The origin of that exosphere had been uncertain since its discovery in the 1970s.
—
Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
Studying the moon:What sustains the lunar exosphere?
—Eric Lagatta, USA TODAY, 12 Aug. 2024
These elements are linked to both processes, indicating that both micrometeoroids and solar wind added to the Moon’s exosphere.
—Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
So, the question remains how Titan maintains its thick atmosphere over timescales of billions of years and why other such icy moons appear to only have thin exospheres.
—Bruce Dorminey, Forbes, 10 Oct. 2024
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Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
Studying the moon:What sustains the lunar exosphere?
—Eric Lagatta, USA TODAY, 12 Aug. 2024
These elements are linked to both processes, indicating that both micrometeoroids and solar wind added to the Moon’s exosphere.
—Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
So, the question remains how Titan maintains its thick atmosphere over timescales of billions of years and why other such icy moons appear to only have thin exospheres.
—Bruce Dorminey, Forbes, 10 Oct. 2024
See all Example Sentences for exosphere
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Cite this Entry
“Exosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exosphere. Accessed 17 Dec. 2024.
Copy CitationKids Definition
exosphere
noun
exo·sphere
ˈek-sō-ˌsfi(ə)r
: the outermost region of the atmosphere of the earth or a planet
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