print email comment close NASA's Imagine the Universe: Dark Matter URL: http://imagine.gsfc.nasa.gov/docs/introduction/dark_matter.html Description: Brief discussions of dark matter, "[the] name given to the amount of mass whose existence is deduced from the analysis of galaxy rotation curves but which until now, has escaped all detections." Includes definitions of astronomy terms, a FAQ, additional activities, and links to related websites. From a NASA educational website intended for students age 14 and up. Publisher: High Energy Astrophysics Science Archive Research Center (HEASARC), Goddard Space Flight Center Library of Congress Subject Headings: Astronomy Dark matter (Astronomy) LII Database Information: Record 20632 created by Jennifer English on 02/13/2006 Last modification on 02/14/2006 Published: 02/16/2006   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/20632