Publisher's description - NASA Video Podcast Viewer 1.0
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NASA Video Podcast Viewer is a very easy to use Dashboard widget that gives you the possibility to browse and view all 12 of NASA`s video podcasts in one simple window.
To install the NASA Video Podcast Viewer widget, when the download is complete, unarchive it and place it in /Library/Widgets/ in your home folder. Show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it.
To learn more about dealing with the Mac OS X Dashboard you can easily access the Apple support page HERE.