Jupiter is the most massive planet in the solar system. It stands to reason that it has a larger region of gravitational influence (where its influence outweighs the force due to the other planets and the sun). So, it's easy for it to capture rocky masses. read more
About 70% of mass of all the planets is inside Jupiter. When it comes to moons, Jupiter has a mini Solar System of its own with a whopping 63 moons orbiting around it. To explain why Jupiter has so many moons, we have to understand the way this behemoth was born. read more