The mesosphere lies between the stratosphere and the thermosphere. It is one of the least studied layers of the Earth’s atmosphere because it lies above the level at which airplanes travel and below the level at which satellites orbit. read more
Within the mesosphere, temperature decreases with increasing height, due to decreasing solar heating and increasing cooling by CO 2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere. read more