i know that gravity can bend light so from this principle i have two theoretical questions. first, can light bend around an object to the extent that the object becomes invisible? basically what i am thinking is that a beam of light coming form behind it will bend around the side and exit the pull of gravity on the same path it was previously in. secondly, is it possible to put light into orbit? if it were then would we be able to see any point in time since it began orbiting. i know that we would have to actually move into the path of light because otherwise no light would escape form orbit and we wouldn't be able to see anything. thanks.