Where No Man Has Gone Before - S1-E4
Corrected entry: When the Enterprise is heading outside the galaxy, from the scene showing the ship at the edge of the galaxy, it looks like the ship could easily go over or under the pink area and solve the whole problem. Of course, it would have been a pretty short show.
Correction: The pink boundary at the edge of the galaxy is only shown from the same plane of space the Enterprise is at. If the Enterprise tried to go up or down the pink boundary would still be there.
Mark English