The distance from the ground to the top of Earth's atmosphere varies depending on how you define the atmosphere. The troposphere, where most weather occurs, extends up to about 7 to 12 miles above the surface. The mesosphere reaches approximately 50 miles, while the thermosphere can extend up to 300 miles or more. The exosphere, the outermost layer, gradually transitions into space and can extend thousands of miles, but its effects are negligible at those distances.
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