* Gravity: Every object in the universe exerts a force of attraction on every other object. This force is directly proportional to the mass of the objects and inversely proportional to the square of the distance between them.
Let's clarify a few things:
* Not every object exerts the same force: The strength of the gravitational force depends on the mass of the objects involved. A massive object like the Sun exerts a much stronger gravitational pull than a small object like a pebble.
* Gravity is a weak force: Even though it affects everything in the universe, gravity is the weakest of the four fundamental forces (the others are electromagnetism, strong nuclear force, and weak nuclear force). You don't notice its effects on everyday objects because they are relatively small.
* Gravity is responsible for:
* Planets orbiting the sun
* The moon orbiting the Earth
* Tides on Earth
* The formation of stars and galaxies
* The expansion of the universe
Let me know if you have any other questions about gravity!
