10 Deadliest Accidents In Star Trek

5. Dekyon Field Casualty List

Often in Star Trek, the only mistake is not making it more than once. The only accident is not having to file a report. Time travel, or temporal mechanics more widely, is a handy thing when it comes to avoiding the most disastrous of misfortunes. Though it didn't stick, one of many do-overs for the Enterprise-D is still burned into our retinas — those very deadly explosions in the Typhon Expanse.

The opener to Cause and Effect was as cool as it was flaming red hot. At less than 50 seconds, thinking time for the audience was also left to the opening credits (before one could simply hit skip). The Enterprise was back in fine functioning form just after, ready to blow up again. Death re-set (and re-set) is still death, and there were about a thousand people around to die ad infinitum on board.

Had the temporal causality loop not been broken in less cataclysmic fashion, the cause of the effect would have remained one of the worst (accidental) ship-to-ship collisions in Starfleet history — USS Bozeman meets warp nacelle. Thankfully, Star Trek: The Next Generation was brought to you today by the letter 'R' and the number 3. Death is countless echoes in the dekyon field, and one ship lost to time.