Dark Matter: a Basic Understanding

turned bailiwick A Basic Understanding Introduction Many people, from the inquisitive, to those involved in the astronomical sciences have questi stard the foundation of Dark content. While it is called many things today, I lead continue to refer to this unseen substance by its original name, Dark social occasion. As it is still a theory being researched today to formalize its existence and make-up, the discovery of temperamental amour was maiden presented to the world rough time ago by two very intelligent astronomers. In coming to understand this payoff, some of the most common questions we find ourselves request are What is it?And, How was it discovered? The most difficult question we all await to face is Does it really exist? While quite tricky, this question is one that each of us have to conclude an answer to on our own. and so to start, I will address the to a greater extent common questions first, and then I will provide my own answer to the question of its ex istence. Dark Matter What is it? When first being introduced to Dark Matter, the first question we find ourselves communicate is what is it? In and out of the scientific community dark matter is unremarkably referred to as the source of extra gravity, or the mysterious form of matter that is unseen. A more refined scientific definition for dark matter is a nonluminous, undetectable, invisible worldly in the universe that makes up more or less 70%-80% of its skunk. In short, dark matter is an unseen form of temporal that contains its own gravity which affects its surrounding materials i. e. gases, prima(predicate), and celestial bodies. With truly dedicated astronomers and cosmologists think on the structure and composition of the beingness, this brings me to explaining how this invisible matter called dark matter was discovered. Dark Matter How Was It Discovered?In 1932 and 1933, astronomers Jan Hendrick Oort and Fritz Zwicky were the first to postulate the sentiment of t he existence of dark matter. In studying the stellar motions of stars within the astronomic plane of the Milky Way galaxy, Astronomer Jan Oort observed that the rotational upper of stars on this outermost part of the galaxy (galactic plane) was actually increasing versus decreasing. This in itself presented a reason to question this stellar movement further since, establish on Newtons law of gravity, the rotational velocity of stars should steady decrease the further they are from the galactic center.Oort continued his observations on stellar motions, while astronomer Fritz Zwicky carried out his studies and observations on galactic clusters and how they remained gravitationally bound. During Zwickys observations, here is where dark matter was discovered on a lots more massive scale. Through Zwickys research, he found that in that location needed to be 10 times as much mass as observed in the form of visible light in order to keep galaxies clustered together. This observation was clear to Zwicky, as it had been to Oort, that in that location was a large sum of mass existing within the cosmos that was simply non-visible. At this point, astronomers simply referred to this material as missing mass. existence that the peculiar stellar movement counters Newtons law of gravity, and occurs in the outermost part of the galaxy known as galaxy doughnuts, both Oort and Zwicky hypothesized that this dark matter must exist in a spherical form that enshrouds the outermost part of galaxies, thus keeping them from ready apart. In arrest how this matter was discovered, this brings me to the final and most important question, and that is find if it really exists.Dark Matter Does It Really Exist? The evidence supporting the existence of dark matter today is very convincing, yet in the scientific community, it is still a theory. Giving a definite answer as to whether it exists is solely up to the individual. Despite this, astronomers are continuing to find more convinci ng information that supports the dark matter theory. For instance, an August 2012 article make in Science News Today, discussed evidence of dark matter filaments (fibers or threads of dark matter) discovered by astronomer Jorg Dietrich and his colleagues.Dietrich and his colleagues x-ray observations of a pair galaxy clusters called Abell 222/223, revealed a ribbon of impatient gas between the clusters. This, along with the galaxies distorted shapes and how light was bent was the first hint of the presence of dark matter. Continued observation of the galaxy clusters revealed a thick cord of invisible matter with a mass like to that of a small galaxy cluster. Dietrich states that gas can account for altogether about 9 percent of that mass, dark matter appears to make up the rest. ConclusionIn understanding that dark matter is an unseen material which contains its own gravity, the theory alone provides a unique way of understanding the structure of our universe. Most importantly, the operate on of astronomers Jan Oort and Fran Zwicky set the gift for astronomers to seek out and understand possible unseen forces at work within our cosmos. This is exactly what astronomer J. Deitrich and his colleagues did. While on that point is a host of significant evidence supporting the theory of dark matter, Deitrich and his colleagues evidence was eye-opening.In concluding if it actually exists, in my thought process its presence is already confirmed. Works Cited Jones, Andrew, and Daniel Robbins. The Universes Dark Matter and Dark Energy, String theory for dummies. Dummies. com. Dummies. biz. 2012. Web. 14 Nov. 2012. NASA. What is Dark Matter? capital letter Institute for Global Environmental Strategies, 23 Feb. 2012. Web. 14 Nov. 2012. Powell, Devin. Dark Matter Filament Illuminated. Science News Magazine 11 Aug. 2012 9+. Print. White, Mark. gyration Curves. Berkeley Astronomy Department. University of California at Berkeley. 2011. Web. 15 Nov. 2012.