An article titled, “Black Hole Science: How do Scientists Know the Center of the Milky Way Galaxy has a Black Hole?” Daniel Ketchum explains how black holes are tied to structure and formation of galaxies, and how a huge black hole exists in the center of the Milky Way. Astronomers believe that the black hole influences the Milky Way’s size and growth and it is millions of times larger than the average black hole. Although there is no evidence to prove that there is a black hole in the center of the Milky way, scientists look at the the way stars nearby are orbiting.
This article gives examples to how the structure of the Milky way appears when there is supposedly a black hole in the center that is enormous; which is relatable to the conceptual objective. According to my lecture notes, to view the Milky Way from the inside we have to measure the distance to globular clusters, and measure distributions of H gas in the disk. The Milky Way is 150,000 light years(ly) across with a central bulge. In class, we also completed pages 135-137 of our Lecture Tutorials titled Milky Way Scales.
I remember talking a lot about this conceptual objective in class, because I took plenty of notes and we did a couple pages out of our Tutorials. Honestly, this conceptual objective was difficult to learn as we were doing the Lecture Tutorials, but on the last page of the tutorials I seemed to grasp it after I worked with people around me.