the region between the ionosphere and the exosphere, extending from about 250–650 miles above the surface of the earth.
the region between the stratosphere and the thermosphere, extending from about 20–50 miles above the surface of the earth.
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One day such sensor parachutes may float through the mesosphere.
He, Azadi, and the rest of the team flew their discs in a chamber filled with the same concentration of air as the mesosphere.
In the mesosphere, there is “not enough air for airplanes or balloons, but too much air for satellites,” he says.
When this rocket was 85 kilometers off the ground, its water cargo exploded — spraying the upper mesosphere with a plume of vapor that froze into a cloud of ice crystals.
Microfliers could run on sunlight or laser light and could someday carry small instruments to measure conditions in the relatively unexplored mesosphere, the researchers suggest.
What about the incidence of penetrating meteors in the mesosphere?