gravity is a excellent thing...gravity is related to mass...the greater the mass the greater is the gravity.... in the case of blackholes...the mass of the system becomes so much that gravity increases to almost infinity... sucking in everything around...and even light can't escape the system...but it again come to same thing...the concept of light.... suppose u are revolving round a black hole and some how manages to not getting sucked in...what will happen....due to its extreme weigh and gravity...the light bends in to the blackhole...making the time around the blackhole go slower and so u start time travel...and after a year if return back to the planet earth u will find ur self a year ahead as u have time travelled...
faster then light...??? how will u do that... u simply can't....the moment u start reaching the speed of light the time slows down... making the adjustment in itself...and u never reach the light speed limit...
ya thats true we look in the past....not only sun, but also to statrs...many twinkle we see are of dead stars...whose light reached earth after millions of year...heck even in the earth u see things in past...ur hand, ur keyboard, ur computer...may be the time lapse is millionth of a second but it is....
if u can travel back in time...which is nt possible...so leave it...