The three correct statements about Newton's theory of universal gravitation are:
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Gravitational force increases as the mass of objects increases.
- This is true because gravitational force is directly proportional to the product of the masses of the two objects.
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Gravitational force increases as the distance between objects decreases.
- This is true because gravitational force is inversely proportional to the square of the distance between the centers of the two objects.
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The theory applies to all objects in the universe.
- This is true as Newton's theory of universal gravitation applies universally to all masses, regardless of their location in the universe.
The other statements about gravitational force increasing as mass decreases or distance increases are false, and the statement that the theory applies only to objects on Earth is also incorrect.