I don't wish to be a prophet of gloom, but I would consider it reasonably likely that the space shuttle will fly no more forever. http://www.nytimes.com/2005/08/02/science/space/02nasa.html?ex=1280635200&en =c97b63d7bb47af82&ei=5088&partner=rssnyt&emc=rss {8-[ Sigh. spike