Ok So I made a Muzei app that just shows you the APOD (http://apod.nasa.gov/apod/) as your wallpaper. 

Should be available here in a couple hours: https://play.google.com/store/apps/details?id=com.richapps.apod&hl=en

Much Thanks to +Roman Nurik for making an awesome Live Wallpaper and providing an api for it. 

Also... making apps over lunch breaks is fun. 
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