The Lunar GNSS Receiver Experiment (LuGRE), designed by the US National Aeronautics and Space Administration (NASA) and the Italian Space Agency, has successfully acquired and tracked GPS and Galileo signals from Earth to the Moon.
The demonstration showed that GNSS-based positioning, navigation and timing were possible from the Moon, and could be used by future lunar missions.
LuGRE, carried on the Firefly Blue Ghost Mission 1 that landed on the Moon, was also able to confirm it could track GNSS at various distances from Earth.
Such GNSS satellite signals could potentially be used as a navigational tool by equipment on the Moon to precisely locate itself and maintain communications.
However, some commenters have pointed out that the dilution of precision for a satellite constellation 400,000 km away would mean that, without further infrastructure, positioning accuracy would be relatively poor.
