Firefly's Blue Ghost lunar lander has a payload which will attempt to acquire a GPS signal from the moon, revolutionizing space navigation.

the first privately-built-and-operated spacecraft to successfully touch down on Earth's natural satellite. On Monday, LuGRE ...

The latest analysis of data from the Galileo probe reveals surprising clues about Callisto, one of Jupiter's moons. These ...

NASA and the Italian Space Agency say they have broken the record for the farthest detection of Earth-based navigation signals from 243,000 miles away in space .

But for both GPS and Galileo the signals are a bit wider than the Earth, so they spill past into space beyond. And so as a spacecraft, you can pick up these spillover signals, we call them ...