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Week 3 Forum - Find an article from a website_ choose one of three topics

Week 3 Forum - Find an article from a website_ choose one of three topics

Q Find one or more recent article(s) from a reliable website or from a resource found in the APUS Library that discusses one of the following topics; summarize the article and elaborate on the topic: a. Describe Brown Dwarfs – what are they, why aren’t they classified as stars, what are the three classifications of them, and where do they fit on the H-R diagram (and indeed, should they even be included in the diagram?). b. What are “stellar nurseries” and protostars, and what advances have been made in discovering and studying them? c. Describe galactic cosmic rays and how they factor into long-duration human spaceflight (e.g., sending humans to colonize Mars). To receive full credit for the post, make sure you respond to at least two of your classmates (one classmate if the total number of students is four or less). If you post later in the week, check which topic your classmate(s) have chosen and pick a different topic to discuss. Your initial post should be at least 200 words.

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According to Hennebelle (2012), brown dwarfs have tendencies to ensure that they have different magnitudes of mass. This is because the masses of brown dwarfs are neither equal to the masses of stars nor equal to the masses of planets in the solar system. Moreover, hydrogen fusion cannot take place because of lack of appropriate magnitude of mass in brown dwarfs. That is why brown dwarfs cannot be classified as stars due to the magnitude of masses of brown dwarfs being different (Hennebelle, 2012). The article discusses about different theories of finding out functions of stellar initial masses. One example of a theory is the turbulent dispersion in which the flow of the magnitude of masses of stellar objects is divided into two phases (Hennebelle, 2012).