Stop showing us how little you understand about... anything.
Magnetics are not new. You didn't discover them. Nor did you discover how to change the polarity of a magnet. The magnetic effects of a black hole at the centre of the galaxy would be barely measurable on earth (our own mag. field is far too strong to 'see' through easily). Indeed, the gravity effect is pretty darn small and the theory is that gravity is, on the interstellar scales, far stronger than magnetism (but oddly a billionth of the strength over 'small' scales).
Why don't you join an Amateur Physics forum? Or start one?