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Google Earth Blog has a full review of the new Google Sky features in GE 4.2. From the piece: "Many of us, who think Google Earth has been a wonderful tool for viewing the Earth, have asked Google to use the same tool and techniques to look at other planets and places of the universe. Sky is certainly a wonderful first step. It stays true to Google Earth's formula for success by providing high resolution imagery, intuitive and easy-to-use interface with the mouse, layers with more information, the same kind of tools for sharing and annotating places with others (placemarks, image overlays, network links, etc.), and most importantly it gives an exciting new look at places many people have never viewed with their own eyes. Just like GE opened our eyes and gave us exciting opportunities to explore our planet, this new release is already doing the same thing for the night sky."
Previous posts at GE blog link to stories of rumours of censorship with the discovery of a missing chunk of sky and the discovery of a spaceship.

The Ogle Earth blog has a detailed review of this new Google site. From their summary : "The web-browser version of Google Sky has gone live. It’s announced on the official Google Blog, where we learn that it is the the labor of love of Google’s Latin America Code Jam finalist and winter intern Diego Gavinowich, and on on Google Lat-Long Blog, where we find a run-down of the features."

For a detailed list of the features and critiques as well, please visit the Ogle Earth blog for more detail.

As the Digital Earth Blog and Ogle Earth blog is reporting this morning, a beta version of WorldWide telescope has been released. You can grab the download directly from the MicroSoft site http://www.worldwidetelescope.org/. For more information and preliminary reviews, please visit the blog links above.