Application 'NASA Image of the day' allow you to see the picture of the day taken from the NASA website. (http://www.nasa.gov/multimedia/imagegallery/iotd.html) It allow you to set the image as lock screen or to save it to your Pictures Library. Also you can download the high resolution version of the image.
What's new in this version
Updated for Windows 8.1
- see the latest picture from the NASA website
- set as lock screen or save images to pictures library