Copy and Answer in NB 1.What are the three layers of the suns atmosphere? 2.What produces auroras? 3.What are sunspots and why are they dark? 4.Describe.
Chapter 11 Stars Properties of Stars Classifying Stars –Hertzsprung-Russel (H-R) Diagram Star Clusters –Open and Globular Clusters.
Susan CartwrightOur Evolving Universe1 A planet-building universe n The top ten elements: Note that the most common elements in your body all occur in.
