Wednesday, December 3, 2008

Hertzsprung-Russel Diagram

1. The main sequence of the HR- Diagram is to show the relationship between how bright a star is and how hot it is.


2. The percentage of main sequence stars are 90%.


3. The sun is a main sequence star.


4. The sun will explode about at least 1 billion years from now.


5. The HR-Diagram has all hot stars to the left and cooler stars on the right. This diagram also gives you an idea of the brightness and dimness

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