Having watched the full Blackstar video here are a few things.
Lazarus Musical opened in late 2015.
It is based on the 1976 Move 'Man who sold the world'.
An Alien comes to earth looking for WATER for his drought stricken planet. An ok movie…gets slow but there are quite a few cameo's in it too. Ultimately he ends up with nothing and just ends up somewhere drinking himself silly as in being stranded here.
Totally different perspective on that one now.
BTW when Bowie is walking from his rocket later in the movie a cameo by none other than Jim Lovell on the 'pad.
Scan Bowie's back catalog. 'Loving the Alien' is just an obscure one other than obvious ones
This needs digging