Answer the 10 short answer: 1- The definition of a star is: “a glowing ball of gas held together by gravity, powered by nuclear fusion.” Break this definition down in your own words and explain what it means. 2- What is the significance of sunspots? Can they indirectly affect life here on Earth? 3- Is there anything particularly remarkable about our Sun compared to other stars? Why or why not? 4- What have been some of the ways radio observations have been useful, as discussed in this class? 5- Name at least one molecular cloud that we’ve discussed in lecture. What is the significance of these objects? 6-Describe how we used star clusters to determine stellar ages. 7-Describe the situation that leads to shell burning in stars. 8-Black holes are oftentimes considered objects with “exotic physics.” Why do you think this is? 9-Why was the subject of relativity brought up in this class? How and what was it used for? 10-What are the different possible end results of a star? Which type do you think is the most common and why? Note: you do not need to be correct about which is the most common, just explain your choice.