Solar System
Solar System Solar System The star System[a] contains the Sun and therefore the objects that orbit it, either directly or indirectly.[b] of these objects that orbit the Sun directly, the biggest eight ar the planets[c] that type the planetary system around it, whereas the rest ar considerably smaller objects, like Study Solar planets and little system bodies (SSSBs) like comets and asteroids.[d] The system fashioned four.6 billion years agone from the implosion of a large heavenly body molecular cloud. The overwhelming majority of the system\'s mass is within the Sun, with most of the Visited Of mass contained in Jupiter. The four smaller Solar planets, Mercury, Venus, Earth and Mars, additionally known as the terrestrial planets, ar primarily composed of rock and metal. The four outer planets, the large planets, ar considerably a lot of huge than the terrestrials. the 2 largest, the gas giants Jupiter and Saturn, ar composed chiefly of H and helium; the 2 outer planets, th...