1. Mass: The Sun is significantly more massive than Earth. Its mass is roughly 333,000 times greater than Earth's mass. Gravity is directly proportional to mass, meaning the more massive an object is, the stronger its gravitational pull.
2. Density: While the Sun is mostly composed of hydrogen and helium, it is much denser than Earth. This means that its mass is packed into a smaller volume, which results in a stronger gravitational pull at the surface.
These two factors combined create the Sun's immense gravitational force, which is strong enough to hold all the planets in our solar system in orbit around it.
Here's a simple analogy: Imagine two bowling balls, one small and one large. The larger bowling ball will have a stronger gravitational pull on a nearby object, like a small marble, because it has more mass. The same principle applies to the Sun and Earth, except on a much grander scale.