They'll learn it though, one of the best parts of this game is adaption.
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Void type barrier - This barrier is a type of worm hole, it's erects a power efficient but relatively small portal that leads to a black hole in the middle of no-where. This worm hole can be sustained indefinitely, and isn't a wall, but a bubble like shield. Meaning it blocks from all directions, it is large enough to shield a corvette, it sadly blocks from both sides. Meaning a missile shot from inside it wont reach outside it, and the other way around.