use  of the visual effect seen in the opening scene of  _Star Trek VI: The Undiscovered Country (1991)_ (qv). This effect is  often referred as the "Praxis Effect" or "Praxis Explosion Effect".  Controversially, a similar effect was added to the detonation of  both Death Stars in the 1997 Special Edition releases of the  _Star Wars (1977)_ (qv). trilogy.