From my limited understanding, black holes supposedly have "event horizons" where everything near them just falls inside the black hole and becomes nothingness, totally anhilated. If this is the case then how is it that black holes emit stuff, like radio waves? If they suck things in and then spit things back out, isn't that the opposite of what a black hole is really supposed to do? I would really like to gain a better understanding of black holes. Thank you!