You are downloading the NASA Astronomy XAP file v18.104.22.168 for Windows Phone. NASA Astronomy is a free and useful Education app: NASA Astronomy is an app designed for those interested astronomy, our solar system, or the universe. Provides news feeds, PDF documents related to ... You can now download the offline XAP file to install & try it.
Download Locations for NASA Astronomy 22.214.171.124 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline NASA Astronomy XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.