LunaNet is aNASA andESA project and proposed data network aiming to provide a "Lunar Internet" forcis-lunar spacecraft and installations.^[1]

It will be able tostore-and-forward data to provide aDelay/Disruption Tolerant Network (DTN).The objective is to avoid needing to preschedule data communications back toEarth.^[1]

LunaNet will also offer navigation services, eg. for orbit determination, and navigation on the lunar surface.^[1]

Draft interoperability specifications have been issued.^[1]

The LunaNet Interoperability Specification (LNIS) is the document which publishes the LunaNet standard. LNIS version 4 was published online in September 12, 2022. LNIS version 5 draft for review was provided online for comment late 2023^[2][3] and published in February 2025.

• NASA's instantiation of LunaNet is called Lunar Communication Relay and Navigation System (LCRNS).^[4]

• Moonlight Initiative is anESA project intending to adopt the specifications.^[5][6]

• JAXA's instantiation of LunaNet is called Lunar Navigation Satellite System (LNSS)^[4]

• Deep Space Network, NASA spacecraft communications
• Artemis program, NASA's return to the Moon
• Laser communication in space
• Coordinated Lunar Time

• LunaNet Interoperability Specification Documents
• NASA's Lunar Communications Relay and Navigation Systems (LCRNS)

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