look at DTN https://en.wikipedia.org/wiki/Delay-tolerant_networking https://en.wikipedia.org/wiki/Delay-tolerant_networking message-oriented network that doesn

look at DTN https://en.wikipedia.org/wiki/Delay-tolerant_networking https://en.wikipedia.org/wiki/Delay-tolerant_networking message-oriented network that doesn't assume end-to-end connectivity motivated by Interplanetary Internet https://en.wikipedia.org/wiki/Interplanetary_Internet https://en.wikipedia.org/wiki/Interplanetary_Internet for example, wait for planetary alignment, then transmit also, messaging via "data mules"