Check out a sneak peek from the final episode of The Big Bang Theory season 6, featuring a potentially game-changing opportunity for a member of the geeky gang.

CBS has released a sneak peek from The Big Bang Theory season 6 finale, “The Bon Voyage Reaction,” which will air this Thursday night. The clip introduces a major new job opportunity for Leonard, which appears to be the driving plot line of the episode. (Plus there are Star Trek references.) Check out the sneak peek right here:

Oh, Sheldon. We know that behind that impermeable wall of Trekkie insults, you’re cloaking your deep, emotional friendship with Leonard… but do you have to hide it quite so well? (Or at least pretend that Leonard is Scottie!) It will be interesting to see how Sheldon copes as Leonard’s opportunity to work with Stephen Hawking moves forward; for a hint at how Sheldon deals with the new development, check out another clip from “The Bon Voyage Reaction” released last week by TVLine.

Another “awww” moment of the sneak peek was Raj’s blossoming relationship with shrinking violet Lucy (Kate Micucci), his sort-of-almost-getting-there-official girlfriend. Lucy and Raj had their first kiss last week (which was as sweet as it was anxiety-provoked), but promo photos from “The Bon Voyage Reaction” hint at a potentially rough patch ahead.

For a few more glimpses at what The Big Bang Theory‘s season 6 finale will bring, check out the wow-worthy episode promo. The official summary for “The Bon Voyage Reaction” says:

A new success for Leonard makes Sheldon very jealous and throws Penny for a loop. Meanwhile, Koothrappali pushes Lucy too far in their relationship.

Will Raj break his fragile bond with Lucy? How will Penny and Sheldon handle Leonard’s departure? Will the crew of the Enterprise the geeky gang from Pasadena make it through the rigors of a season finale unscathed? Make sure to share your hypotheses in the comments below!