NATS 1740 Chapter Notes - Chapter 16: Neutrino, Weakly Interacting Massive Particles, Alpha Magnetic Spectrometer

• School: York University
• Department: Natural Science
• Course: NATS 1740
• Professor: Paul Delaney

Document Summary

That is a question that has been asked for years. Dark matter is materials in the universe that scientists cannot directly observe. Dark matter is hard to observe because of the lack of light from it. To embrace the elements of the universe together, dark matter must make up approximately 80 percent of its matter. In the 1950"s, scientist studying other galaxies specified that the universe contained more matter than seen by the naked eye. According to pieter van dokkum, a research at yale university stated, motions of the stars tell you how much matter there is, they don"t care what form the matter is, they just tell you that it"s there (redd, 2017). Furthermore, van dokkum directed a group that identified the galaxy. Dragonfly 44, which is made up of nearly completely of dark matter. Magnetic spectrometer (ams), a sensitive particle detector on the international space station, has been operating since its instillation in 2011.