The sky, which is essentially Earth's atmosphere, consists of five distinct layers.
Earth's atmosphere is layered, and these layers extend from the ground upwards. The distinct layers, according to the provided reference, are:
- Troposphere
- Stratosphere
- Mesosphere
- Thermosphere
- Exosphere
In addition to these five, the reference also mentions another layer:
- Ionosphere: This layer extends from the mesosphere to the exosphere.
Beyond the exosphere is outer space. Therefore, when referring to the layers of the atmosphere which make up what we perceive as "the sky," we can conclude that there are five primary layers, with the ionosphere spanning across some of them.
