this post was submitted on 19 Aug 2025
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I’m a starlink customer and think it’s one of the best advancements in the past decade as it provides real access to rural addresses. The side effects of this is nearly immeasurable.
Spacex needs to STFU about this though. Fiber should continue to be deployed where possible.
Fiber also has far better performance that satellite can never match.
there's no fundamental physics limitation that makes this true. in fact, light in a vacuum travels faster than in glass fiber, so the theoretical latency of LEO internet is actually faster compared to fiber over a certain distance
For nieve signal distances, that can sometimes be true. That's not how starlink works however. It bounces the signal between satellites, each adding latency. Overall, fibre wins in almost every situation.
The bigger problem is saturation. Most things you can apply to radio waves can be applied to light in a fibre. The difference is you can have multiple fibres on the same run. This massively increases bandwidth, and so prevents congestion.
Just checked the numbers. Starlink is up at 550km. That means a minimum round trip of 1100km. In order to beat a fibre run, you are looking at over 2000km distance. Even halving that to (optimistically) account for angles, that's still a LONG run to an initial data center.