I found an article titled, “Ultra-Distant Galaxy Is Exceptionally Unexceptional“. This article stars off by explaining the very first galaxy to form after the big bang. Is generally too far away for modern instruments to detect unless they are unusually bright when compared with most of their neighbors. But lucky a group of scientist had the opportunity to study an ultra-distant galaxy that is exceptionally unexceptional. Known as MACS1423-z7p64 is the light form of this newly discovered galaxy traveled for 13.1 billion years before finally reaching Earths. This means this galaxy formed around one billion years after the big bang accrued. Astronomers were able to detect this extremely distant object only because of its light was magnified by a natural phenomenon called gravitational lensing. In which the light from a distant object is magnified by a very massive object that lies closer to the observer. Austin Hoag is a graduate student at the University of California, who lead the study, said in a statement from the university “We think this is much more representative of galaxies of the time”. This discovery is a significant because that first generation of galaxies helped initiate a major transition that the universe underwent around this time, known as the epoch of reionization.
The sixteenth conceptual objective is, I can compare the Milky Way galaxy to other galaxies. Lets first talked about they way we can measure or classify galaxies. The way we measure distance is measured by how close things are to certain stars. Another way we can classify galaxies is called a messa catalog. This catalog of many pictures of comets basically tells use thing we don’t know much about in other galaxies. Galaxies have a couple basic structures to them like a center or nucleus and arms which are called arms. Their are four basic types of galaxies. First there is a spiral galaxy, which is mad of gas and dust and old stars which has spiral arms of active stars formation. Second a barred galaxy, which has a bar extended nuclear bulge outward center and has spiral arms of active stars. Third an elliptical galaxy, which has more of a spherical and oval shape and does not have a region of active stars. And finally there is irregular galaxy, which have a ill-defined shape, usually smaller, and have active stars formation in the arms located near larger galaxies. In class we did a lecture tutorial called “Galaxy Classification”. This tutorial has use look at eight different galaxies and classified them by their specific characteristics . The second part of this tutorial asked use many questions on which galaxies would be hotter than others, and vise versa. This tutorial truly thought use how to classified, define, and characterizes different galaxies. And distinguish the differences, and compare them to the Milky Way.
The article I found relates to the conceptual objective because there finding new things about galaxies. They are breaking through the bearer of black holes, and are truly finding out what their structure is. It was very interesting reading about a students doing the research on this project, and finding out new information for the astronomy community.