Microsoft celebrates the 2nd anniversary of the launch of WorldWide Telescope – congrats to Jonathan, Curtis, and the rest of the small team. Besides the initial windows client, there’s the web client (silverlight), a web control, and the Bing Map WWT addin. When it was initially introduced, the WWT allowed customers running Windows and Mac OS X to download a small client and access a “universe” of information, essentially imagery collected from top ground- and space-based telescopes worldwide. But the project is designed to deliver additional data such as survey studies. Furthermore, the content shared free of charge allows for a deeper perspective than a traditional telescope would ever make possible, including imagery taken at various wavelengths: gamma, X-ray, ultraviolet, visible light, infrared and radio.