What is the belief that when you die you become a star or thunder or a permanent part of the universe?

I don't mean just your body like your atoms but like your soul becomes one with the universe and becomes a star or thunder or anything forever?What is the belief that when you die you become a star or thunder or a permanent part of the universe?pantheismWhat is the belief that when you die you become a star or thunder or a permanent part of the universe?Nobody can prove that.