1. The main squence of the H.R Diagram is to show relationships between aboslute maginitude and tempature of a star.
2.There is about 90 percent of stars on this diargram and our star the Sun is one of the stars that is on thier.
3. The sun is a main squence star.
4.What will happen is that the sun will burn out in a bout 4 billion years from now.
5.The picture above is about the H.R. diagram which shows the main squences of the stars that is in our galaxy which our the main squence.
