Wavytone,
I can't find the link now where I read about it. But it stated mirrors could be built with this material in the future.
Just like this link where they say:
"Researchers at the Department of Energy's Sandia National Laboratories and the University of Kentucky are developing enabling technologies for a new thin-film, ultralight deployable mirror that may be the future of space telescopes and surveillance satellites."
http://www.sciencedaily.com/releases...0519064524.htm
cheers
bob