Thread:God of Evil100/@comment-27729149-20150823101111/@comment-24977413-20150901140726

Nothing is confirmed on that, but it's stated that the Homeworld Gems are in possession of Gem-controlled planets implying that they used their version of the Kindergarten to create them like they were going to do the EartH, and judging by Rose and the others going to war against the Homeworld Gems to protect the Earth and all the statements about Earth being destroyed if it's activated, we can assume it had similar effects on those planets.