Grab this free simple galaxy sky box example! customize the size scales and colours and create awesome galactic events with it!
because these are FREE assets they will not be continued to be updated and may be deprecated at some point.
 
Tutorial Link:
 
Galaxy Themed Skybox – UEFN Tutorial

Contains:

Unreal Engine Version: UEFN ONLY
UEFN Version: 37.51
Master Materials: 1