Worldwide Telescope offering by Microsoft

Microsoft has announced its Worldwide Telescope software will be released in the spring, and looks to compete with the Sky feature which is already found in Google Earth. The software will be available as a free download. By all accounts of those who have seen preview, the Microsoft product offers a profound visual and educational experience.

There is a demo available to watch here. I watched the video, and from what I have seen is that it looks pretty impressive. The rendering of images look to be much smoother than GE's version. One potential drawback I see with WWT is that it will only be made available to run on the Microsoft OS. No surprise there, but it would be nice if it were made to run on other OS platforms.