Seudónimo Seudónimo

01-03-2016
Biology

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If the upper atmosphere is is very thin, why do space vehicles heat up as they enter the atmosphere?

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Аноним Аноним

01-03-2016

Its not the thickness that counts, but rather the composition of that part of the atmosphere. For example, that upper part of the atmosphere might be hot because of thermal elements, but not necessarily the thickness.

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