Google Sky Gains Galaxy Cluster Data - Technology Review

"Use Google Earth in sky mode and you immediately gain access to an impressive set of images of the universe....But there's still room for improvement, say Jiangang Hao and James Annis at the Fermi National Accelerator Laboratory in Batavia. They point out that Google uses low resolution images of the night sky to improve the speed at which they load. The result is that Google Sky shows only a small fraction of the galaxy clusters that have been photographed to date. To set this wrong to rights, Hao and Annis have converted the high resolution images of a section of the night sky into the Keyhole Markup Language (.KML files) which anyone can download and view using Google Sky. Hao and Annis have used images from the Sloan Digital Sky Survey....All you have to do is download them....Hao and Annis provide the images at three levels of resolution so you can choose the size of the files you want to download. The extra detail is significant and Google Sky allows you to fly across the galaxy clusters (although not through them in 3D)...."