Before this question is closed, I would like to invite anyone interested in the topic to read up on Delay-tolerant networking.
Until quantum entanglement arrives and is stable, we can be grateful that DARPA, NASA, et al, have already considered this and developed a proposal for the Interplanetary Internet (IPN).
Follow the links from there and you will learn all that you could wish to know.
Basically, whereas TCP/IP will drop undeliverable packets, a Delay/Disruption Tolerant Network will store and forward. Thus, if your not quantumly entangled spaceship slips behind Jupiter and cannot see the earth, it will wait until it has orbited, then perhaps send the data packet to a relay orbiting Mars, which might, in turn, have to store until it can see the Earth, then ultimately forward the packet.
There are already many existing projects using DTN, beginning with the famous zebranet (Google for zebranet wildlife tracking).
I have developed a few such projects myself, but an not allowed to discuss them.
I am sure that a little imagination and a handful of Raspberry Pi Zero Ws would allow you develop an interesting project for your own