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Orbit can't be maintained in atmosphere. Some temporary low orbits are possible at lower heights. About the lowest possible orbit around the earth is 80 km high, but it will decay rapidly because it is still in the earth's atmosphere (the thermosphere). Even where the atmosphere is extremely thin (only a few molecules of gas in a cubic meter), the friction will eventually slow the orbit of a satellite or vehicle, and it will fall to earth.

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16y ago

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