Here's a breakdown of its location:

* Mesosphere: The mesosphere is the third layer of Earth's atmosphere, sitting above the stratosphere and below the thermosphere.

* Thermosphere: The thermosphere is the fourth layer of Earth's atmosphere, above the mesosphere and below the exosphere.

The mesopause is the boundary between these two layers and is typically found at an altitude of around 80-85 kilometers (50-53 miles) above Earth's surface.