1. Mass: The more massive an object is, the stronger its gravitational pull. This means that larger planets or stars have a stronger gravitational pull than smaller objects.
2. Distance: The force of gravity weakens rapidly with distance. The further away you are from an object, the weaker its gravitational pull on you. This is why we feel the pull of Earth's gravity, but we don't feel the pull of the Sun or other distant stars.
The relationship between these factors is described by Newton's Law of Universal Gravitation:
* F = G * (m1 * m2) / r²
Where:
* F is the force of gravity
* G is the gravitational constant (a fixed value)
* m1 and m2 are the masses of the two objects
* r is the distance between the centers of the two objects
This formula tells us that the force of gravity is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.