The outermost layer that separates our atmosphere from outer space is the exosphere. "Exo" means outside. According to NASA, this layer is about 6,200 miles thick which is almost as wide as Earth ...

The final layer is the exosphere, where the Earth's atmosphere gradually gives way to space. It extends from 440 miles above the Earth's surface to 6,200 miles.

JACKSONVILLE, Fla. — How many layers do you think there are in our atmosphere? Five! We have five different layers between us and outer space. From the surface up there is the troposphere, the ...

The troposphere, where humans reside, is the layer nearest to the Earth's surface. Extending from the surface up to approximately 4 to 12 miles, it constitutes the lower atmosphere.

When the Hunga Tonga-Hunga Ha’apai volcano erupted underwater in January, it created a plume of ash and water that broke through the third layer of Earth’s atmosphere.