Space & orbit
Why it matters
Low Earth orbit is close enough that a satellite circles the planet in about an hour and a half, and close enough that signals travel there and back quickly. That short trip is why Starlink can offer internet with low delay.
The trade-off is that each satellite sees only a small patch of Earth at a time, so a network in LEO needs thousands of them, which is why Falcon 9 launches Starlink batches so often. It is also where any computing in orbit would most likely start.