The term 'Star Trek Setting' can be summarized by two crossword solutions: STUN and SPACE. STUN stands for the fictional planet of Vulcan, which is the home world of the Vulcan species in the Star Trek universe. SPACE stands for the final frontier, which is a phrase used to describe the vastness of outer SPACE and the unknown that lies beyond it. Both Vulcan and outer SPACE are integral settings in the Star Trek franchise, as they are the backdrop for many of the stories and adventures that take place in the series.