Earth Day 2025: Our amazing atmosphere
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. This layer is composed of This layer is composed of composed of 71% Nitrogen, 21% Oxygen and 1% of other gasses. All weather that we experience is confined to this layer.
Just above the Troposphere contains the stratosphere, which is the layer that commercial jets fly in. The Stratosphere can also be described as one of the most important layers because it's where you'll find the Ozone layer. This layer helps protect us from harmful UV (Ultra Violet) radiation by absorbing most of it before it reaches the surface, without this life, would not be possible as we know it.
The Mesosphere or middle layer is next and can be described as the coldest layer of the atmosphere, this is also the layer that meteors burn up. This happens because of the speed of the meteors but also because of the increased presence of gas molecules compared to the layers above it. The gas molecules and speed of the meteors create friction and heat which causes them to 'burn up'.
Above the Mesosphere is the thermosphere
The Thermosphere is known as the hot layer of the atmosphere with a temperature up to 4,000 degrees. It's thin layer, lack of gas molecules, swelling and sinking air causes the temperature to soar. The Auroras or northern lights also can be found in this layer and at the top of this layer, the International Space Station and other low-orbit satellites can be found.
The final layer of the atmosphere is the Expsophere, the layer that most satellites roam and is the layer that is considered the end of our atmosphere and where 'outer space' begins.
Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
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