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by seabass-labrax 625 days ago
Satellites have to pass through the Van Allen belts in order to get into such higher orbits, which may expose them to a not insignificant amount of radiation, especially if the final orbit injection is not done in a single impulse. Then, once they are comfortably out in their higher orbit, they have to endure yet more radiation without the aid of the Earth's magnetic field, and require more cooling capacity due to spending much less time in Earth's shadow than an LEO satellite.