This month, NASA took a major step toward creating a Solar System Internet by establishing operational Delay/Disruption Tolerant Networking (DTN) service on the International Space Station. The DTN service will help automate and improve data availability for space station experimenters and will result in more efficient bandwidth utilization and more data return.
Sources
Solar System Internet Technology Debuts on the International Space Station
ISS installs networking tech that may soon connect the whole Solar System | TechCrunch
