Earth’s atmosphere is large, extending out to around 10,000 kilometers from the surface of the planet. It’s so large, in fact, that scientists break it into five separate sections. There’s one particular section that hasn’t received a whole lot of attention due to the difficulty in maintaining any craft there. Planes and balloons can visit the troposphere and stratosphere, the two sections closest to the ground, while satellites can sit in orbit in the thermosphere and exosphere, allo...
