The sun is a star that lies at the center of the solar system. It has an estimated age of about 4.5 billion years and has been burning for about the same length of time.
Given this text, identify the three main points.
The three main points are:
1. The sun is a star at the center of the solar system.
2. It has an estimated age of around 4.5 billion years.
3. It has been burning for approximately the same amount of time.