nowadays the concept of black holes is changed.earlier it was thought that nothing can escape the hole even the velocity of light. but it is now proved that light escapes through the corners of black hole. this is the hakwings radiations.. this is now helping the scientist to discover the black holes. though the eye of black hole cant be seen. we believe that there is a super-giant black hole at the center of milky way or you can say THE GALACTIC CENTER. but as the universe is expanding, it is not sure that there is blackhole and that will absorve earth. dark energy helps the expansion of universe but the black hole absorve the universe. if we say that it is correct then the universe will be in a neither expand-contract stage. but it is expanding. so the effect of this b.hole is not in picture till today. i personally believe that there has to be any mysterious body at the anti-galactic center
AKSHAY