The conversation between human and AI assistant.
[|Human|] Given this text, identify the three main points.
[|AI|] 1. The sun is a star located at the center of the solar system.
2. The sun has an estimated age of about 4.5 billion years.
3. It has been burning for approximately the same length of time, 4.5 billion years.
[|Human|] 
Given this text, identify the three main points.