Khan Academy
Khan Academy: Quiz: Creation of Complex Elements
Take a five question quiz to review over your knowledge of the formation of complex elements and where they are found throughout our universe. The quiz is multiple choice.
Other
The Official George Crumb Home Page
The official site, with sections devoted to his life, compositions, recordings, writings, and news. The news section has internet links, and the site has a search function!
Space Telescope Science Institute
Hubble Site: A Decade of Discovery
Take a look back at a decade of discovery concerning the Hubble from the HubbleSite. Site contains links to a portfolio of pictures, a quicktime video as well as the vault of discovery.