Holding a wormhole open long enough to send anything through, much less keep it open permanently, requires threading the “throat” with a variety of matter that to anyone’s knowledge doesn’t exist in nature. And the only known means of synthesizing it requires the energy output of a small star.
Fortunately, Alpha Centauri happened to have a couple of spares, of the three stars in the system the relatively small and distant Proxima Centauri was deemed least useful for other development and given over to the then “pie in the sky” Stargate project.
After a couple hundred residents were paid off and evicted the star’s asteroid belt and dwarf planets were disassembled and converted into solar collectors and Proxima Centauri b, too hot and irradiated to ever be terraformed, was girdled with particle accelerators and plated with more solar panels.
The inner workings of the system-wide mechanism, commonly referred to as the “Star Forge”, are heavily classified and the 13,000 AU expanse between it and the main Alpha Centauri system is heavily patrolled and laden with sensor arrays. Any unauthorized craft that approaches within 100 AUs is targeted by at least a dozen different missiles and lasers. What is known is that it takes several years to produce enough exotic matter for a ship-transversable wormhole.
Posted on Patreon May 13th.