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From the Earth's surface to outerspace is between (about) 600 and 1000 km above us (373-622 English miles, straight up).
There are various layers in the atmosphere. The Troposphere (up to about 14.5 km above us) is where weather happens. Next up is the Stratosphere (up to about 50km above us), where the ozone layer protects us from UV light.
Next up is the Mesophere (up to 85 km), where a lot of complex chemical reactions happen, although it's quite a cold place.
Above that is the thermosphere, which extends to around 500-600 km above us. This is a thin atmosphere where high temperature reactions occur between atmospheric gases and outer space radition.
Finally there is the Exosphere, where effectively a vacuum exists, there's just enough atmosphere to measure it. This gradually fades into space and interplanetary gases. The drop off point where you could say you're effectively moved from atmosphere to space is argued about. Some would say 500km, others not until nearly 1000km.
There are various layers in the atmosphere. The Troposphere (up to about 14.5 km above us) is where weather happens. Next up is the Stratosphere (up to about 50km above us), where the ozone layer protects us from UV light.
Next up is the Mesophere (up to 85 km), where a lot of complex chemical reactions happen, although it's quite a cold place.
Above that is the thermosphere, which extends to around 500-600 km above us. This is a thin atmosphere where high temperature reactions occur between atmospheric gases and outer space radition.
Finally there is the Exosphere, where effectively a vacuum exists, there's just enough atmosphere to measure it. This gradually fades into space and interplanetary gases. The drop off point where you could say you're effectively moved from atmosphere to space is argued about. Some would say 500km, others not until nearly 1000km.
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