Doesn't exist.

if our sun (u know... somewhere in the sky... at great distance...) turns into a black hole... (it still send light out, but the light doesn't go far, the gravitation is that heavy that light will bend and come back...

... everything till jupiter or saturn will destroyed also by the gravitation... think about it... if there was a wormhole (jumphole) to a blackhole system, the wormhole will also be destroyed by the gravitation, or it must be very far from the black hole... but then u can't see the black hole (only if u look at background, then u see a black spot with totaly darkness, that will be the black hole)