The Branes Behind Deep Space Exploration
How prevalent are hyperspace membranes? In my example I said they were created by the fusion reactions of stars. That means the smallest body that could generate one would be a brown dwarf (abut 12-13 Jupiter masses) that can fuse deuterium. In other words there could be rogue planets in deep space that are nearly unreachable using FTL. These planets might hold all manner of interesting people, places or things, just looking to keep a low profile. What about white dwarfs, neutron stars and blackholes? Perhaps the membranes their reactions created could persist for millions of years after they died out. In the case of these massive objects the membranes might break the normal convention of brane sizes and be perilously close to the hyper mass objects. They might be in a state of flux as they slowly decay with no energy being put into them or pulsate, changing in size over days or hours, in which case a badly timed jump could put your ship in great danger. As for multiple star system