Does anyone know if once discovered they then appear in your nav panel anywhere in system like sites such as Davs Hope?
Or do you always need to do the needle in a haystack?
TBH, I'm not sure if the markers are stored or not but, TBH, it doesn't really matter.
Trouble is, you need to be within 1,000Ls of a POI before the waypoint appears on your nav' panel and, basically, if you can get to within 1,000Ls of the Voyager probes, you've already found 'em.
