>>11915539>what exactly a monopole isa monopole is just a point of charge. in the context of magnetism, this would mean that it is either positive or negative "magnetic charge" in the exact same context of an electric charge. a magnetic monopole would behave in magnetic fields in exactly the same way electric monopoles do in electric fields.
with regards to "how it can cause harm to spacetime" that is simply a sci-fi conjecture. magnetic monopoles have interesting consequences in physics, but nothing that would be world ending. the physical interpretations would be more evidence towards unified physical theories and charge quantization.