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Millions of meteors enter the atmosphere, an average of 40 tons per day. Most of them all melt or vaporize within the mesosphere, as a result of collisions with the gas particles contained there. Earth's thicker atmosphere prevents the surface collisions (craters) that can be seen on the planet Mercury, on our Moon, and on most other smaller bodies in the solar system. Only a few large or dense rocks make it to the ground.

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12y ago
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13y ago

As far as I know, it doesn't really do anything to protect the Earth. It contains all of the least dense particles of the atmosphere, and keeps the satellites in orbit I think. Sorry, but this is the best answer I have!

I am going to improve this ; phone calls and television pictures are relayed by a way of communications satellites that orbit earth in the exosphere

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14y ago

The main dynamical features in this region are atmospheric tides, internal atmospheric gravity waves (commonly called "gravity waves") and planetary waves. Most of these tides and waves are excited in the troposphere and lower stratosphere, and propagate upward to the mesosphere. In the mesosphere, gravity-wave amplitudes can become so large that the waves become unstable and dissipate. This dissipation deposits momentum into the mesosphere and largely drives global circulation.

Noctilucent clouds are located in the mesosphere. The mesosphere is also the region of the ionosphere known as the D layer. The D layer is only present during the day, when some ionization occurs with nitric oxide being ionized by Lyman series-alpha hydrogen radiation. The ionization is so weak that when night falls, and the source of ionization is removed, the free electron and ion form back into a neutral molecule.

A 5 km (3.1 mi) deep sodium layer is located between 80-105 km (50-65 mi). Made of unbound, non-ionized atoms of sodium, the sodium layer radiates weakly to contribute to the airglow.

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9y ago

Mesosphere protects us from the meteors. This is the outermost layer.

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11y ago

Burning Up Meteors And Rock Fagments.

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Q: How does the Mesosphere protect the Earth?
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