Exosphere
The exosphere was the outermost layer of a planet's atmosphere. Orbital skydiving was done from exospheric altitudes. (VOY: "Extreme Risk")
On stardate 43779.3, the USS Enterprise-D was preparing exospheric charts of the Hayashi system, an essential step towards colonization, before it was intercepted by the USS Hood. (TNG: "Tin Man")
Structure and layers of an atmosphere | |
|---|---|
| Planetary |
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| Solar | |