4.4 Formation of the Solar System
A Solar System is born
Birth of a Sun
The bulge at the centre became more and more condensed as matter was pulled in. This bulge was becoming a new star-our Sun. We call this still-condensing future sun a protosun.
Birth of the Inner Planets
As the Sun continued to grow, clumps of matter began to form in the area around the Sun. In the great heat, these lumps continued to condense, and became planets. We call these still-condensing future planets protoplanets. As matter condensed, the dust cleared and a hole began to form around the Sun. The inner planets became fully formed, while the outer planets were emerging from the dust.
