If anyone is interested in Disruption Tolerant Networking (DTN), keep reading and check out the article on The Register (which includes a link to the software and a brief description). The Mitre Corporation has given network administrators something to chew on, in the form of a simulator that lets them build networks in space. MITRE’s Technology Transfer Office released some of its network research into the public domain, including a Ubuntu .ISO that bundles the Common Open Research Emulator with version 3.5.0 of the Interplanetary Overlay Network and the Disruption Tolerant Networking Development Kit https://www.theregister.co.uk/2017/04/18/mars_network_simulator/ <https://www.theregister.co.uk/2017/04/18/mars_network_simulator/>