@eddz99: Just like most of AV thinks Yu Yu Hakusho characters can planet bust, moon bust, or even continent bust. If they haven't done it we can't say they have. It was never even stated that he could do this so why would we believe so. If he could tank it which means it's not going to hurt him to much and render him unable to fight he wouldn't have been trying to leave the planet now would he...
Not most, only supernova :P
Actually , while fighting goku ssj, he knew he would survive it even if he was low on ki ( meaning he has no ki to enchance his defense ) , all he wanted was to suffocate goku :P , but i bet my girlfriend that he could even tank the explosion of the sun at his full power :3