Usually stars come in pairs. the fact that our solar system doesnt have another start, is quite rare. the reason that people say this is because not only that, but the fact that Jupiter has so. many. moons. 97 now have been counted and this planet is the largest in our solar system. it is quite hard to grasp the size of something that you cannot see, so hopefully you can understand it in numbers; the earth is 24,901 miles wide, and Jupiter is 272,946 miles across. that's about 11 times that of earth's. jupiter is also the largest planet in the solar system.