This reminds me of The Darkwar Trilogy, by Glen Cook...
Don’t know that one.
This reminds me of The Darkwar Trilogy, by Glen Cook...
I admit I am coming at this from the direction of a physicist, so accept that bias...
But you can't go using a tool to make a structure *on the scale of a solar system* without knowing why that tool works. That sounds implausible, to me. I mean, the structure itself is implausible to start with. The idea that the makers don't know why the tools they used to make it work? That stretched credulity. For me, anyway.
Sufficiently advanced technology is indistinguishable from magic.
If you want an example of a really large structure, take a look at the 2E setting Penumbra, the capital of the Illithid Empire.
Yeah, this was almost the inverse of a Dyson Sphere, where the Sun was covered, with the inhabitants living outside of the structure in the relative darkness.
Wouldn't the exterior be dead cold like outer space? It would receive no sunlight at all...
Herdspace
Connects To/From: Casaspace
Planets and Ports: Many ports, no 'planets' per se
Sources: The Maelstrom's Eye
Description and Notes:
Herdspace is a very different Crystal Sphere. It has no planets; instead, the inside of the sphere itself is the 'ground'. This provides it with more living space than any other sphere. It is dominated by 'mega fauna', planetary scale creatures that walk through the sphere (the footprint of at least one mega fauna was measured at 130 miles long!). Portals from the phlogiston are actually gates so ships entering the sphere do not disturb the 'ground'. The sphere likely has everything imaginable somewhere in it, but spelljamming-aware rastipedes and falmadaraatha have been confirmed to live within it. The gnomes of Ironpiece and the Elven Imperial Navy have both visited the sphere more than once. It is renowned as the home of the Fal known as 169. It has a sun at its center, the atmosphere doesn't extend all the way to the center, after two hours plus of upward flight wildspace is reached. The sun of the sphere is dark over half, so that day and night do exist in the sphere.