Talk:Goku VS Superman 2/@comment-208.54.39.255-20150726022142/@comment-1535286-20150726023344

In Death Battle, all characters exist within the same universe, meaning Goku and Superman live on the same Earth. On Goku's world, the Dragon Balls are really well known artifacts, so Superman most likely would have heard of them.

I can't find confirmation on this, but one of the researchers on Death Battle said that Dende was on Namek at the time of the fight, meaning the Dragon Balls survived.

And as for how Superman found them without the Dragon Radar...it probably took him a while.