There is quite a lengthy back-story about this, now that NASA has been exposed as yet another deceitful government agency that faked most of its accomplishments. A lot of it is on the ConsciousHugs forum. One would think that the governments and the military would have worked out how to get to the moon by now, as it would make one heck of a military base. But they haven't... so the big push now is to put that research into the hands of the commercial inventors out for big profits, to see if they can actually get a rocket to the moon.
Things like LIGO seem to be money scams, when you look into their funding. But I think this push is real, in the sense that our imperious leaders want to get off this rock before something "bad" happens.
We know from Larson (The Universe of Motion) that astronomy is BACKWARDS. So if they have been basing spaceflight on backwards reasoning, how are they actually getting probes "out there"? If they actually are... and there is mounting evidence showing that they aren't--it is CGI.
The RS does provide insight into the system, as previously mentioned, through the structure of quasars and pulsars. I'm still looking at this as a potential anti-gravity propulsion system, but am having problems with the theoretical model because the anti-gravity field not only lifts against gravity--but also pushes the molecules apart in the engine (since it is scalar). It apparently has the same problems of the famous, Marvin the Martian "disintegrating gun." Start the engine and it disintegrates (the molecules disassociate into gas). Got a solution to that problem? I'm stumped for the moment...