it means the air height.
The mesosphere is located in the middle of the atmosphere
The mesosphere is in space it is the 3rd atmosphere.
The mesosphere is a layer of the atmosphere. As such it is gaseous.
The third layer of the atmosphere is the mesosphere. It is located above the stratosphere and below the thermosphere. The mesosphere is where most meteoroids burn up upon entering the Earth's atmosphere.
The middle layer of the atmosphere is the Mesosphere.
atmosphere
The mesopause is the third highest layer of the Earth's atmosphere, located above both the mesosphere and the stratosphere. It marks the boundary between the mesosphere and the thermosphere.
Mesosphere
mesosphere
In the mesosphere
In the mesosphere
The coldest layer of the atmosphere is the mesosphere, which extends upwards from about 31 miles to 53 miles above the Earth's surface. Temperatures in the mesosphere can drop as low as -130 degrees Fahrenheit (-90 degrees Celsius).