SAS Astronomi
Objectives Determine the size and shape of the Milky Way, as well as Earths location within it. The Milky Way Galaxy Describe how the Milky Way formed.
Understanding the Stars How can we learn about the lives of stars, which last millions to billions of years? How can we learn about the lives of stars,
Chapter 15: Surveying the Stars. How can we Study the Life Cycles of Stars? A star can live for millions to billions of years. we will never observe a.
LECTURE 16, OCTOBER 26, 2010 ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT [email protected] 1ASTR 101-3, FALL 2010.
Chapter 12.1: View From Earth (Version 2)
Announcements Homework 10 due Monday: Make your own H-R diagram!
Today: How a star changes while on the main sequence What happens when stars run out of hydrogen fuel Second stage of thermonuclear fusion Star clusters.
12.1 Notes Stars. What are Stars? A Star is a large ball of gas that emits energy Mostly composed of hydrogen and helium. Energy starts at the core. Sketch.
Chapter 24 Galaxies Nick Devereux 2006. Birr Telescope - Ireland.
Quiz #6 Most stars form in the spiral arms of galaxies Stars form in clusters, with all types of stars forming. O,B,A,F,G,K,M Spiral arms barely move,
1 Stars Stars are very far away. The nearest star is over 270,000 AU away! ( Pluto is 39 AU from the Sun ) That is equal to 25 trillion miles! At this.
