If by "round ball" you mean the Earth then yes, yes it does - gravity is the reason. Besides, there is no "upside down" when it comes to discussing the planets/universe - just one's perspective: https://investorshub.advfn.com/uimage/uploads/2022/2/11/sotvoprimary-upside-down-world-wall-map-environmental_wm00458.jpg This isn't debatable.