Searching for Dark Matter When Astronomers look at the Universe, they study the mysteries of the stars, dust clouds and other matter visible to radio, infrared, optical, ultraviolet, X-ray, or gamma-ray telescopes. What is not readily apparent through these mediums is even more mysterious. When Astronomers observe spiral galaxies like our Milky Way, they use Doppler shifts to determine the rotation speeds of stars and gas at various distances from the center of the galaxy. …showed first 75 words of 1517 total…

…showed last 75 words of 1517 total…physicsweb.org/article/world/13/1/9> Mystery. Dark Matter Mystery, Chandra X-Ray Observatory Field Guide <http://chandra.harvard.edu/xray_astro/dark_matter.html> MOND. Dark Matter or Different Gravity? <http://zebu.uoregon.edu/special/mond.html> White Dwarfs. Astronomers Glimpse Galaxy's Heavy Halo, March, 2001 http://spaceflightnow.com/news/n0103/23darkmatter/ Symposium. Germans' Claim on Dark Matter Is Greeted With Skepticism. NYTimes 02/26/02 <http://www.nytimes.com/2002/02/26/science/physical/26NEUT.html>