What is importance of the universal law of gravitation?

Explanation

### Step-by-Step Solution:

1. **Definition of Universal Law of Gravitation**:
The Universal Law of Gravitation states that every two objects in the universe attract each other with a gravitational force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

2. **Binding Force to Earth**:
One of the most significant implications of this law is that it explains why we are held to the Earth's surface. The gravitational force between the Earth and objects on it keeps us grounded.

...