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exosphere |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.03 sec. |
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exosphere: see atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other planets and satellites are known, only the earth's atmosphere has been well studied, the ..... Click the link for more information. . |
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To distinguish among these processes, spectrometers on the craft will compare the composition of the exosphere with that of surface rocks. Then there is the notion of accelerating oxygen and hydrogen from the outermost reaches of the atmosphere, or exosphere, downward into the nightside by means of magnetic and electric fields from the solar wind. But the ISS orbits 402 km (250 mi) above Earth in the exosphere (upper atmosphere). |
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exosphere
