Placing a water balloon more massive object in the center you can introduced a marble less massive object to observe and compare the.
Gravity rubber sheet animation.
The orange is curved space time.
A standard way to illustrate this idea is to place a bowling ball representing a massive object such as the sun onto a stretched rubber sheet representing spacetime.
The dented rubber sheet done in earth s gravity is a not too bad analogy for newtonian gravity.
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The rubber sheet analogy for einstein s general relativity model of gravity is a popular way to visualize the effect mass has on the curvature of spacetime.
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A rubber sheet is stretched over a quilting ring.
Let me try the ant analogy in a bit more detail.
If a marble is placed onto the rubber sheet it will roll toward the bowling ball and may even be put into orbit around the bowling ball.
The ants walk forward.