Building such facilities off Earth could have a lot of benefits. Early projects are underway.

The LuGRE receiver acquired and tracked GPS and Galileo satellite signals in lunar orbit on Feb ... signals in the L1/E1 and L5/E5 frequency bands. The farthest signal detected came from the Galileo ...

“So if there’s a GPS satellite flying on the opposite side of the Earth from the moon, then those signals are traveling past the edge of the Earth and out into space. And if you’re flying in lunar ...

NASA launched the Lunar Trailblazer satellite to map water deposits on the moon, focusing on permanently shadowed craters near the poles. Weighing 440 ...