Why is there no gravity?

Answer 1

Gravity is invisible. Imagine a table cloth held on by each corner above the

ground. This is the universe. Put an apple on it. This is a planet. The apple

makes a dent. This is gravity. Put grapes on the cloth. These are smaller

planets. They are drawn to the apple. Put a soccer ball on the cloth. This is a

very large planet. Everything moves towards it. Gravity.

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To answer the question:

There's no 'why', because there IS gravity, everywhere and at all times.