I've jumped through two black holes so far, one sent me 1.2mil ly away, the other 800k ly (or so the messagees after the jump said), so both times I'm roughly the same distance from the center as when I started.
Is there maybe a more controlled way of jumping through black holes, or is it just pure luck? I've got Sigma, Tau and Theta Warp upgrades installed, and I can jump for about 1.2k ly which is pretty pointless if I want to take the journey that way.
Btw, regarding Nada and Polo, will they pop up from time to time even though I made those black hole jumps, or did I just leave them behind?