Gravity. Objects with a sufficient mass will exert a gravitational force. In your example, the globe has water on it and you're expecting it to fall down off the globe. Cool, what is down? I have a feeling you are imagining a ball and pouring water on it and the water is falling off. In this scenario, down is towards your feet, which would be towards the center of the planet. Pretend you are no longer on Earth, you are in space, what specifically is down and what would cause it? Also, why are all other large celestial bodies, that we can easily observe, spherical? The moon has phases which cast very obvious shadows which indicate the shape. Why is earth the only flat object?As the earth is seen from the moon or anywhere else in the solar system as roundish or global, why doesn't the 70% water fall off the planet into a black hole or somewhere else ? Thanks.![]()