You are downloading the Stellarium Mobile Sky Map AppX file v220.127.116.11 for Windows Phone. Stellarium Mobile Sky Map is a free and useful Education app: Stellarium Mobile Sky Map is a fully-featured planetarium for your phone. It shows a realistic and accurate night sky map, just like what you see ... You can now download the offline AppX file to install & try it.
Download Locations for Stellarium Mobile Sky Map 18.104.22.168 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Stellarium Mobile Sky Map AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.