Answer the following questions. approximately 300 words per question  link to book if needed provided  https://openstax.org/books/astronomy/pages/1-introduction  Specifically describe the process that the sun uses to produce energy and describe the ways that energy travels through the sun. Describe the methods used to find the distances within the solar system to nearby stars, more distant stars within our own galaxy, and variable stars. Describe five characteristics of a star that can be determined from its spectrum. Describe the characteristics of the H-R diagram including the axes and the major stellar groups. The use of outside sources is optional, but you must provide citations and references in APA format for any sources you use, including the textbook