caption: The image shows a diagram of a sphere with a curved line and a point at the end of it, along with text and numbers indicating that it is a representation of the first phase of the solar system. The diagram is composed of a series of concentric circles, each with a different color, and the text is written in a bold font. The circles are connected by a thin line, and each circle is labeled with a number from one to the next. The text provides further information about the diagram, such as the number of protons and neutrons in each phase.