CK-12-Physics-Concepts - Intermediate

http://www.ck12.org Chapter 24. Astrophysics

25.3 References

1. Courtesy of NASA/JPL-Caltech/STScI. http://commons.wikimedia.org/wiki/File:OrionNebula-_newimage-
   fromHubble%26Spitzer%28293693669%29.jpg.


2. Courtesy of NASA and the European Space Agency. http://commons.wikimedia.org/wiki/File:Messier51_-
   sRGB.jpg.


3. Samantha Bacic. CK-12 Foundation.


4. Courtesy of NASA. http://commons.wikimedia.org/wiki/File:Supernova1987A.jpg.


5. User:Sakurambo/Wikipedia. http://commons.wikimedia.org/wiki/File:Redgiants.svg.


6. User:TheStarmon/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Orion_tjt.jpg.


7. Image copyright Designua, 2014. http://www.shutterstock.com.