(2)Google Earth's new feature, Google Sky allows viewers to navigate through the far reaches of the universe as it incorporates high-resolution images from sources like NASA's Hubble and the Sloan Digital Sky Survey. Check out PC World's selection of Google Sky's Most Spectacular Sights(1), such as the pictured 'Sombrero Galaxy.'

1. http://www.pcworld.com/article/id,137265-page,1-c,internettools/article.html
2. http://www.pcworld.com/article/id,137265-page,1-c,internettools/article.html