http://amazing-space.stsci.edu/capture/stars/

http://www.geocities.com/CapeCanaveral/Launchpad/1364/Stars.html

http://btc.montana.edu/ceres/html/LifeCycle/starsbackground.htm

http://www.windows.ucar.edu/tour/link=/the_universe/Nebula.html

http://www.windows.ucar.edu/tour/link=/the_universe/Strange.html

http://www.windows.ucar.edu/tour/link=/the_universe/Galaxy.html

http://outreach.atnf.csiro.au/education/everyone/pulsars/