Google Sky Map is being open sourced and donated to the community. Future development of the project will be shared with Carnegie Mellon University as student projects.
http://googleresearch.blogspot.com/2012/01/open-sourcing-sky-map-and-collaborating.html?v=0

blogoscoped: http://blogoscoped.com/forum/172864.html
sky map: http://googleblog.blogspot.com/2009/05/planetarium-in-your-pocket.html
code: http://code.google.com/p/stardroid/

http://www.mattcutts.com/blog/google-searchology-2009-search-options-google-squared-rich-snippets/