Outer edge of the exosphere. Earth ≈ 10 000 km.
The Kármán line: the edge of space. Above it the sky is black, stars are at full brightness and there is no haze. Earth = 100 km.
Top of the mesosphere (mesopause), where meteors burn up. Earth ≈ 85 km.
Top of the stratosphere (stratopause), with the ozone layer. Earth ≈ 50 km.
Top of the thermosphere / ionosphere (aurora and airglow live in its lower part). Earth ≈ 600 km.
Top of the troposphere (tropopause): weather and clouds live below. Earth ≈ 12 km.
Top altitude of each layer above the surface, metres (Earth values by default). Plain JSON.