 In the wake of the destruction of the US Space Shuttle Columbia on 1  February 2003, an opening screen was added to the episode "Stigma"  (first air date 5 February 2003), which read "In memory of the  Columbia crew...You will always be an inspiration." Further, just as  the original US Space Shuttle prototype (which never reached space)  was named "Enterprise" after the ship in the original  _"Star Trek" (1966)_ (qv), so it was revealed in episode 2.26 ("The  Expanse", first air date 21 May 2003) that the second Starfleet  prototype ship (designation NX