Part I – Introduction Galaxy is a group of billions of stars, dust and gas, that are close to one another. The stars we see and the solar system are part of the galaxy.…
Slide 1 The Milky Way – Our Galaxy Slide 2 Exam II A: 25 or better B: 20 or better C: 17 or better D: 15 or better F: 13 or below Average: 20.7 Slide 3 Solutions to Exam…
Slide 1 Review: The life of Stars Slide 2 Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating”…
Review: The life of Stars Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating” to…
Studying for EXAM III On Sun and Stars Many chapters in book, which has way too many details lecture notes Focus on the general, repeating features Emphasis on concepts…
The Milky Way Appears as a milky band of light across the sky A small telescope reveals that it is composed of many stars (Galileo again!) Our knowledge of the Milky Way…
Variable Stars & The Milky Way Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating”…