The outermost layer of the Earth's gaseous component is called the exosphere.

Here's a breakdown:

* Exosphere: This is the outermost layer, extending from about 700 km (435 miles) to 10,000 km (6,214 miles) above Earth's surface. It's extremely thin and gradually fades into the vacuum of space.

* Thermosphere: Below the exosphere is the thermosphere, where temperatures increase with altitude due to absorption of solar radiation.

* Mesosphere: This layer is known for its cold temperatures. It's where most meteors burn up.

* Stratosphere: The stratosphere contains the ozone layer, which protects us from harmful ultraviolet radiation.

* Troposphere: This is the lowest layer where weather occurs.

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