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NASA Delivers Navigation System for Commercial Lunar Relay

Page: NASA article by Katherine Schauer (SCaN Program office writer), Goddard Space Flight Center, 3 August 2026 (last updated 4 August 2026). https://www.nasa.gov/technology/space-comms/nasa-delivers-navigation-system-for-commercial-lunar-relay/. Fetched 2026-10-01T18:30:56Z. File: sources/moon-base/nasa-gov-technology-space-comms-nasa-delivers-navigation-system-for-commercial-lunar-relay.md. The Moon Base landing page lists it among its news items. Most of the article's in-text links are mail-gateway redirects (safelinks.protection.outlook.com), not NASA addresses.

Summary. NASA delivered the NavCube3-mini navigation receiver to Intuitive Machines on 13 July 2026, for integration into Altus-1, "the company's first lunar relay satellite". NavCube3-mini uses signals from Earth's GPS and Galileo satellites "at lunar distances". It is a technology demonstration "validating the use of GNSS-based navigation in the lunar region". The relays "are designed to enable communications and navigation for astronauts and rovers operating at the agency's future Moon Base". The phases page puts Altus-1 on IM-3, a Phase One mission.

Key points

  • The payload: "About half the size of a shoebox and weighing just 3.5 pounds"; "less than 20 watts of power". It "can determine a spacecraft's precise position far beyond Earth orbit". It builds on Goddard navigation work that extended GPS navigation "to new record-breaking distances".
  • The relay network: Altus-1 is "the first of a planned network of lunar relay satellites being developed under the company's Near Space Network Services contract with NASA". The relays will serve "missions operating at the Moon, including the challenging lunar South Pole region, where Artemis astronauts will land in 2028, and where direct communications with Earth can be difficult". The 2028 landing agrees with the March 2026 fact sheet (Artemis IV).
  • Testing before delivery, at Goddard: vibration, thermal vacuum and electromagnetic compatibility, with performance tests before and after each, using "high-fidelity simulations of the GPS and Galileo signals the NavCube will encounter in lunar orbit".
  • What the demonstration is for: "providing valuable performance data to support the development of future lunar navigation infrastructure". It is "part of NASA's broader strategy to develop communications and navigation services that work across both commercial providers and NASA's networks", for "orbiters, landers, rovers, and, eventually, astronauts".
  • Related terms on the page include the Research and Technology Mission Directorate and the Space Communications & Navigation Program.

Against the architecture

These pairings are the wiki's, by subject. The article doesn't cite the ADD.

  • Earth GNSS, not lunar GNSS. NavCube3-mini uses Earth's GPS and Galileo signals near the Moon. ADD Rev C's C&PNT text says lunar PNT services "may grow to realize Global Navigation Satellite System (GNSS)–like capabilities, providing extended regional or global services" (ADD Rev C, p. 41). The C&PNT white paper names "lunar-equivalent GPS" among future services for the Foundational Exploration segment (FE C&PNT white paper, p. 7). Those are services built at the Moon; NavCube3-mini tests Earth's systems at lunar distance. They are different things.
  • Orbit, not surface. The tests simulate the signals "in lunar orbit". Tech gap #0101 is about PNT on the lunar surface; the article doesn't address it.
  • The contract name. "Near Space Network Services contract" is the wording of the phases page too. In the ADD, "The NSN, through the Commercial Services contract, is contracting with commercial service providers to establish communication and PNT services that will be able to support cislunar users" (p. 64). Its LCRNS project "validates commercial lunar relay services" (p. 64). That these are one contract is the wiki's reading (SCaN Networks).

SCaN Networks · C&PNT Systems · Missions and assets · Phase 1 functional gaps: communications and PNT