Hurrah, we come to the end of the module! We started by asking why gravity is the most important force for how the Universe behaves, even though it is the weakest force.

The reason is that gravity is the only force that is always attractive. Gravity cannot make objects move away from each other.

We know that magnets can both attract and repel each other. Other forces too can attract and repel. But, because gravity acts in only one direction, the total gravitational force can become a very large number.

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Next Module

Check out the next module in this series! Gravitation 2