Dark+Matter+2

=Dark Matter =  Picture from: http://www.quantumdiaries.org/2013/06/26/does-dark-matter-really-exist/ Edited by: Thalia Arredondo

Fall 2015

Dark matter was discovered by astronomer Fritz Zwicky in the 1930s. Zwicky was observing a cluster of over 1000 galaxies, called the Coma cluster. He theorized that there must be some unseen matter to account for the velocitites of some of the galaxies in the cluster. This unseen matter is known as dark matter. It cannot be seen with a telescope, but we know it is there because it has a gravitational effect on visible matter. It is one of the greatest mysteries in astrophysics.

Summarized/Paraphrased by: http://www.cfhtlens.org/public/what-dark-matter



[]
 * Dark matter makes up 80% of the Universe-but where is it all?**

Matthew Francis is the author of the article. The site is a reporting publisher on various aspects of technology and science. The site and its data seems to be very trustworthy. ARS Tecnica is a site with articles on technology, scientific advancements, and reviews of various gadgets. It is a growing digital editorial publication which caters to “alpha geeks”. July 27, 2014 December 8, 2014 Thalia Arredondo The information presented in the article seems to be accurate and up to date. The audience is “alpha geeks” according to the website. The article is written appropriately, and is fairly easy to read. The website is very easy to navigate. There are more pages beyond the home page, and are easily accessible by using the search bar at the top right of the page.
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Picture from: []


 * DARK ENERGY, DARK MATTER**

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Kristen Erickson is the author. The site is maintained by the Natural Aeronautics and Space Administraion, a government agency. I believe the data to be extremely trustworthy. The site is maintained by NASA, and seeks new knowledge of Earth and our solar system. Information about anything in our solar system can be found on the website. June 5, 2015 December 8, 2015 Thalia Arredondo The information seems extremely accurate and up to date. There are no facts which contradict information from other sources. NASA produces the most accurate information. The audience is for anyone interested in our solar system. The information is written concisely, but is not hard to comprehend. It is extremely easy to read. The website is extremely easy to navigate and to find out more information. There is a plethora of information, which is accessible by searching for more pages on the website.
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[] Martin White is the author of this webpage. It is maintained solely by him. Martin White is a professor of Physics and Astronomy at UC Berkeley. The data on this page is trustworthy. The site is a page written by Martin White as a research tool for his students and to list his publications. Information on physics, astronomy, and cosmology may be found here. Not known. December 8, 2015 Thalia Arredondo The information seems accurate and fairly up to date. As there is no know date of when the webpage was written I cannot be completely sure that the information is outdated. However, the information is not contradictory to the information from other credible websites. I am assuming that the audience is Martin Whites’ students at UC Berkeley. It is written appropriately at a college level. It is fairly easy to read. The site is fairly easy to navigate. There is a site index, which leads to more pages that are also a part of the site.
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[] The author is Nola Taylor Redd. She is a contributor for Space.com. Redd has a Bachelor’s degree in English and Astrophysics. I believe the data to be trustworthy, although there are no sources in the article. Space.com is a website that publishes articles on space and technology, written by “contributors”. Information on anything in the solar system, as well as telescope reviews can be found here. May 01, 2013 December 8, 2015 The information seems accurate and up to date. None of the information in this article contradict the information I have found in other articles. The audience for this website seems to be anyone interested in space, our solar system, and telescopes. It is written appropriately for anyone to read, and is fairly easy to read. Yes, it is easy to find more information on the website. On the right hand side of the website, there are links to other articles which have to do with dark matter, or whatever it is that you had searched. That feature is very handy and time saving. The links lead to articles which are part of Space.com.
 * Space.com**
 * What is Dark Matter?**
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Picture from: http://hyperphysics.phy-astr.gsu.edu/hbase/astro/darmat.html

[] Emma Grocutt is the author of this page. I also believe she is the sole individual who maintains the site. The information seems very trustworthy, although there are no sources cited. The site’s name is “The Canada-France-Hawaii Telescope Lensing Survey”. Their teams purpose is to observe dark matter in the universe. Information on dark matter, dark energy, and gravitational lensing is available on this site. Not known. December 8, 2015 Thalia Arredondo The information on the website seems fairly accurate and up to date. All of the information shared on this page corresponds with information found on other, credible, websites. The audience is mainly for the CFHTLS team. It also seems it is for anyone else who is interested in dark matter and dark energy, as well as observing it. No, it is not easy to find more on this website. There is not a lot of information to be found here. The site is pretty small, and only has a few pages. There are only pages for
 * The Canada France Hawaii Lensing Survey**
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