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
Recent Examples on the Web
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
But the ring could not last: both the pull of gravity and the drag of Earth’s exosphere, which extends more than 6,000 miles into space, would eventually pull the rubble down to the surface, eliminating the ring.
—Jeffrey Kluger, TIME, 18 Sep. 2024
Astronomers have for decades been aware of the delicate atmosphere surrounding the moon that is so thin and fragile that it's better referred to as an exosphere.
—Eric Lagatta, USA TODAY, 12 Aug. 2024
See all Example Sentences for 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
But the ring could not last: both the pull of gravity and the drag of Earth’s exosphere, which extends more than 6,000 miles into space, would eventually pull the rubble down to the surface, eliminating the ring.
—Jeffrey Kluger, TIME, 18 Sep. 2024
Astronomers have for decades been aware of the delicate atmosphere surrounding the moon that is so thin and fragile that it's better referred to as an exosphere.
—Eric Lagatta, USA TODAY, 12 Aug. 2024
See all Example Sentences for exosphere
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'exosphere.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Exosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exosphere. Accessed 31 Oct. 2024.
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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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