 The Japanese dialog of the game had a much better explanation of the  Planets involvement in the whole story, as the Reptites worshiped  the Planet, the "Entity" the characters talk about is the Planet,  and, moreover, the last chapter was not called "The Final Battle",  but "At The Edge of our Planets Dream". This is why the sequel of  this game, Chrono Cross, had Planet references all over the place  that made sense with the original Japanese dialog.