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)

exospheric

ˌek-sō-ˈsfir-ik

-ˈsfer-

adjective

Examples of exosphere in a Sentence

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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