2. Star Selection Your Guide to Choosing the Star That’s Right for You

3. Types of Stars  Main Sequence  90% of stars (Sun)  Hydrogen to Helium  Giant & Supergiants  Sun in 5 billion years  Helium fusion  Stars you see in sky  SG end in supernova  White Dwarfs  Dying star  Main Sequence  90% of stars (Sun)  Hydrogen to Helium  Giant & Supergiants  Sun in 5 billion years  Helium fusion  Stars you see in sky  SG end in supernova  White Dwarfs  Dying star http://www.projectcalico.com/images/HERTZSPRUNG-RUSSELL%20DIAGRAM-%2001%2001%2007.jpg Hertzsprung-Russell Diagram

4. Life Cycle of a Star

5. Classes of Stars  Classified by Spectral TypeSpectral Type  Emit different light/heat  O: Blue / 60,000º K  B: Blue-white / 30,000º K  A: White / 10,000º K  F: Yellow-white / 7,500º K  G: Yellow (Sun) / 6,000º K  K: Yellow-orange / 5,000º K  M : Red / < 3,500º K  Classified by Spectral TypeSpectral Type  Emit different light/heat  O: Blue / 60,000º K  B: Blue-white / 30,000º K  A: White / 10,000º K  F: Yellow-white / 7,500º K  G: Yellow (Sun) / 6,000º K  K: Yellow-orange / 5,000º K  M : Red / < 3,500º K Stellar Spectral Types. Retrieved April 6, 2008, Web site: http://hyperphysics.phy-astr.gsu.edu/hbase/starlog/staspe.html

8. Exoplanets 2012

9. Exoplanets 2014