this post was submitted on 20 Jun 2023
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For internet between Mars and Earth you have to deal with a peak latency of twenty minutes, forty for duplex. I don't think TCP/IP is designed in any way to deal with that. You'd have to come up with a translational protocol with TCP/IP buffers on either end. I don't think it would be that difficult to engineer in terms of current technology.
Another issue is link speed and bandwidth, the distance causes signal degradation. You have to run transmission speeds lower. It might be possible to use repeater satellites to alleviate issues. That's commonly done on Earth bound communications.
There is a way to create data links that don't rely on RF using quantum entanglement. It would be zero latency across all of space. It's sci-fi tech, but it's hugely more feasible than things like warp drives and transporters. We're already developing tech that utilizes quantum states .