How do you keep them stabilized while in your ship? A star's core is extremely dense and hot that it would simply blow apart without MM stabilization.
But, it's not without MM stabilization. I said that we have the exact same materials as our universes are identical, the only real differences is the fact that Conservatia has taken over Sol and stuff, Destroyed Venus, and renamed things to accommodate its liking.
It is obvious that Conservatia is a well developed confederacy/empire, it's not far fetched for them to have already mastered MM engineering and whatnot.
This is pretty much how it is.