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Why are there no aircraft or spacecraft flying or orbiting in the mesosphere?
A. Aircraft are not powerful to reach the mesosphere and spacecraft can't orbit that low.
B. There is danger of meteor strikes in this layer.
C. Spacecraft would burn up at orbital speeds and it's too thin for aircraft wings to achieve lift.
D. The ionized gases in the mesosphere prevent radio contact with aircraft and spacecraft.
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Why are there no aircraft or spacecraft flying or orbiting in the mesosphere?
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