Just my five kopecks to discussion
In real reality we have only one type of space. Difference between intersolar and intrasolar space is only matter of balance between pressure of solar wind and galactic magnetic field. Inside astrosphere (heliosphere in particular case of our Sun) we have hypersonic flow of stellar wind prevailing over interstellar medium, outside astrosphere we have prevailing galactic magnetic field and undisturbed interstellar medium.
In game reality we have no true space containing all 256 local systems. We have set of isolated locations centered around 256 stars (technically, every location is centered around witchpoint, not around sun nor main planet). And we have set of interstellar locations centered around middle points on lines, connecting local systems (or middle points on lines, connecting opened interstellar location with local systems in 7 LY radius, in case of multiple aborted jumps). There are no ways in game to travel between these locations besides wormholes. So it is matter of discussion to interpret interstellar space as normal space or some exotic another space.
Well.
Arguments for unique nature of interstellar space (interstellar space is hyperspace)
1. It is not possible to reach interstellar space flying away from sun in normal space.
2. Greenish tint of stars and nebulae.
Seems argument No 1 is not working. It is not possible to reach neighbor system at 0.1 LY by normal ways too! Does it means that Universe consists of bubbles of normal space, containing only one local system and separated by hyperspace? It will be too hard to match such radical concept with modern scientific knowledge.
Arguments for casual nature of interstellar space (interstellar space is just another set of locations in normal space)
Sometimes we can see generation ships in interstellar space. OK, these ships may be off-course from their relic interstellar lanes and stranded in hyperspace by unknown reasons like Thargoids making trap wormholes etc. But personally I prefer reasons based on Occam’s razor.
So interstellar space is normal space and the only difference between interstellar locations and local systems is lack of sun and main planet (technically you can place other objects like minor planets and moons in interstellar locations, right?).
If interstellar space is normal space, there is only one remaining situation. Hyperspace is space in wormhole tunnel. This space has unique property – it allows only one-directional movement along the tunnel axis. Seems this is physical limitation, not just technical like travel in tunnel with established one way road. You can’t stop in tunnel and inverse movement, you can’t change travel time. Travel time in wormhole between local system is function of distance between these systems in power two, not ship velocity etc.
Witchspace is not technical term with fixed meaning. It is just informal and fussy word for any space outside local system. Some people can use this jargon word for hyperspace in wormhole tunnel, some for interstellar space, some for both cases.
In brief:
Local space – normal space, reachable using Torus drive.
Interstellar space – normal space, unreachable using Torus drive due to technical limitations or some physical reasons, but reachable by aborted jumps
Hyperspace – space in wormhole tunnel.
Witchspace – jargon word for any space outside local space.
Is travel in wormhole instantaneous?
We have two possible interpretations.
1. Travel is instantaneous for player, but takes time for local systems. Ship clock is resetting to system time on exit from wormhole tunnel.
2. Travel via wormhole really takes time for player. Ship clock is resetting due to evident game reasons.
Methinks both interpretations are lore consistent. In game you have no simulated basic primary needs. Instant travel between system using wormhole, half hour or so flight to main station, several minutes to refuel, unload and load cargo, start and ready for next jump. You have no any need to leave ship being docked – all service is available using on-board screens F3, F4 and F8. In real reality or in fanfic reality you’ll need time to needs like sleep, rest, food, drink, social relax and sometimes sex. It is your lore. According to Pilot’s Reference Manual to the Cobra Mk III your ship has living section with sleeping, relax and hygiene areas. So you can relax during long 25 hour flight between systems separated by 5 LY. Are you really need such luxury suite for short but dangerous flight from witchpoint to main station, if travel via wormhole is instantaneous? On the other hand, main station is not just docks and stores. It is main traffic hub of local system with offices, shops, bars and recreation zones and you can spend some of your time to make business, relax and meet other people on station.
And the next question. Is physical nature of wormholes, connecting eight sectors, is same as “usual” wormholes, connecting local systems? It looks the same, but in case of travel between local systems A and B you can jump from A to B and immediately create wormhole from B to A. In case of travel between Sector 1 and Sector 2 you have no such possibility.
So returning to nature of sectors:
Are all 8 sectors just distant regions in the same normal space?
Or maybe sectors are 8 layers of more complex type of space with additional dimensions?
Any ideas?