What is the beginning for all??

By measuring the age of meteorites (rocks that fall to earth from space), scientists have worked out that the Solar system is about 4.6 billion years old. When it began to form, it was a  whirling mass of stardust and gases, but as it spun around quickly, gravity began to pull it tighter together. Eventually, the dense centre formed the Sun and dust further out gathered into lumps, which became the planets.