Solar System (def.): The Sun together with the group of celestial bodies that are held by its attraction and revolve around it.
One Star, eight planets, and a myriad of moons, comets, and asteroids. This is the Earth's local neighborhood known as the Solar System.
Despite studying this system for centuries, astronomers still yearn to know much more. NASA's Chandra X-ray Observatory is providing new insight and uncovering new mysteries about objects of all sizes and across distances throughout our Solar System. More >