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by Ajedi32 3261 days ago
Not really. Once something is in orbit, it's just going to naturally stay in orbit unless acted on by an outside force. That's just basic inertia.

There is some amount of atmospheric drag in low earth orbit which will eventually cause satellites at that altitude to lose speed and fall back to earth, but that drag is small enough that the satellites should be able to remain in orbit for years without needing any additional thrust.