@OmSigDAVID,
"Up" and "down" have no relevance in space, unless one is near a body capable of exerting perceivable gravitic force, in which case "down" is towards the core of such body, and "up" is 90 degrees from said core.
The convention of showing maps with north as "up" in relation to the viewer is simply an artefact of said maps having historically been generated by denizens of the northern hemisphere who were triumphant in imposing their belief that they were more important upon the map making conventions at a crucial time.
Should the earth ever fall victim to a black hole, the parts of the planet nearest to the event horizon will be determined by forces which, to any inhabitants of said planet, will appear as near as possible to simple dumb chance.