Explain the formation of the solar system, in brief.

The formation and evolution of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun. Thus sun contains almost 99.86% mass of the solar family. Remaining mass was flattened into the orbit, planet and moon, comet etc. By studying meteorites, which are thought to be left over from this early phase of the solar system, scientists have found that the solar system is about 4600 million years old!