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لایه‌ای از جوّ کرهٔ زمین که بالاتر از میان‌سپهر و پائین‌تر از برون‌سپهر واقع شده‌است

AI overview

The thermosphere is a layer of Earth's atmosphere that begins around 100 kilometers above the surface and extends several hundred kilometers higher, where it produces colorful auroras and airglow phenomena. It matters because it's where much of the energy from the sun is absorbed and where important atmospheric processes occur at the edge of space.