Troposphere (5 – 9 Miles Thick) The troposphere is the layer closest to Earth's surface and is what most of us are probably imagining when we talk about the atmosphere.

First, as I mentioned, is the troposphere. This is the lowest layer of the atmosphere, where all weather occurs. It begins at the ground, and extends upward to about 6.2 miles above earth’s surface.

Between 50 and 1,000 kilometers above our heads is the ionosphere, a layer of Earth's upper atmosphere consisting of charged ...

The Earth has a fascinating atmosphere that contains several unique layers. The Troposphere is the layer that we live in, it starts at the surface but the height often varies to about 9-12 miles up.

Solar flares can reshape exoplanet atmospheres within days, affecting temperature, winds, and potential habitability.