What is the solar system all about?

The Solar System is the gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest eight are the planets, with the remainder being smaller objects, such as dwarf planets and small Solar System bodies. read more

The solar wind was much weaker in the outer regions, however, resulting in gas giants made up mostly of hydrogen and helium. The sun. The sun is by far the largest object in our solar system, containing 99.8 percent of the solar system's mass. read more

Introduction A solar system is a star and all of the objects that travel around it—planets, moons, asteroids, comets and meteoroids. Most stars host their own planets, so there are likely tens of billions of other solar systems in the Milky Way galaxy alone. read more