Star Trek: What Is The Doomsday Machine?

Star Trek: What Is The Doomsday Machine?

Key Takeaways

  • The Doomsday Machine” showcases the strengths of Star Trek: The Original Series, including fantastic character moments.
  • At the center of the story is an enigmatic and all-powerful weapon that acts as a metaphor for the idea of nuclear deterrence during the Cold War.
  • While the iconic Planet Killer has never returned to the series, Star Trek’s expanded media has been unable to resist exploring its origins.

As a lifelong Star Trek enthusiast who’s spent countless hours navigating the vast cosmos of the franchise, I can confidently say that the Doomsday Machine is one of its most intriguing creations. It’s a testament to the show’s ability to weave timely social and political issues into captivating sci-fi narratives.


As a dedicated Star Trek gamer, I can’t help but be captivated by one of the most jaw-dropping episodes from the series – “The Doomsday Machine.” This mind-blowing adventure was part of the second season in the Original Series, and it’s an episode that continues to leave a lasting impact on fans. The introduction of the colossal, fearsome weapon known as the ‘Doomsday Machine’ pushed the boundaries of what we thought the series was capable of, delivering a tense and emotionally-charged experience that consistently ranks among fan favorites.

The ‘Doomsday Machine’ is highly praised due to its ability to blend compelling character interactions with strong science fiction elements, along with the struggle between emotion and reason. Particularly noteworthy is how the title’s Doomsday Machine serves as both a narrative antagonist and a symbol for the genuine existential fears of the 20th century.

What happens in Star Trek: The Doomsday Machine?

Star Trek: What Is The Doomsday Machine?
Star Trek: The Doomsday Machine
Main CastWilliam Shatner, Leonard Nimoy, DeForest Kelley, James Doohan, William Windom
WriterNorman Spinrad
DirectorMarc Daniels
ReleaseOctober 20 1967
Where To WatchStream on Paramount+

They say there’s no devil, Jim, but there is. Right out of Hell, I saw it.

Speaking thus, Commodore Matt Decker is found by Captain Kirk and Dr. McCoy on the damaged and adrift USS Constellation. When the USS Enterprise encounters solar systems with missing planets and heavy subspace interference, the away team looks to Decker for answers. Scott explains that the Constellation’s warp drive is inoperable, and they find Decker alone, mentally distressed. He shares that he transported his entire crew to a planet during an attack on their ship. As Kirk learns the planet has been obliterated, the tragic memory of losing his entire crew overwhelms Decker.

The rattled commander remembers the aggressor was an enormous enemy ship, boasting a massive jaws-like opening that cuts through planets using a powerful antiproton beam. Meanwhile, on the Enterprise, Spock proposes the device deliberately annihilates planets to convert them into fuel for its self-sustaining voyage. He informs Kirk that the path of destruction hints at the vessel’s destination: the most densely populated region of the Galaxy.

In simpler terms, Kirk likens Planet Killer to a nuclear bomb from the 20th century, referring to it as a Doomsday Machine or Device. This hypothetical weapon is so powerful that using it would lead to self-destruction. Originating as the ultimate threat, Kirk ponders whether an extinct alien civilization constructed this destructive force in another galaxy.

Upon Decker and McCoy’s return to the Enterprise, the Starship begins to tow the Constellations. Suddenly, a massive planet-destroying threat emerges and chases the ships. Spock advises Captain Kirk that it will be hard to stop the unmanned device from moving. When the machine’s enormous weapon is triggered, the ships become separated and can no longer communicate until the Planet Killer adjusts its course towards the Rigel colony.

In this scenario, when Decker and Spock have a disagreement based on logic, it’s the commodore who takes charge of the Enterprise. He disregards Spock’s warnings and Dr. McCoy’s insufficient evidence suggesting that he might be mentally unwell. Meanwhile, even though the Planet Killer’s hull is virtually indestructible due to neutronium, Decker still launches an attack. Simultaneously, Kirk and Scott strive to restore some impulse speed onboard the Constellation.

The direct phaser blasts from the Enterprise don’t harm the machine, but Decker remains determined in his quest for revenge. As the Enterprise’s shields falter and hull weakens, causing heavy losses among the crew, Spock uses Decker’s relentless, self-destructive attack as evidence of his instability for command. The commodore eventually concedes, but it’s too late to prevent the tractor beam from pulling the Enterprise into the Planet Destroyer’s jaws.

In a week’s worth of work, Scotty manages to disclose that he has drained one of the Constellation’s phaser banks. Kirk’s strategic diversion enables the Enterprise to escape. When Kirk eventually reaches the ship, he confronts the startled commodore with, “Are you the madman who nearly destroyed my vessel?

In simpler terms, Kirk tells his deputy to take command from the commodore, and Decker resigns after Spock convinces him that he will actually arrest the commodore because Vulcans don’t bluff. During his medical examination, Decker manages to overpower the security team escorting him to sickbay in a hallway brawl, then seizes control of a shuttlecraft.

In a swift course toward Planet Killer, the commodore remains unfazed as Spock tries to reason with him about the pointlessness of his actions. Similarly, Kirk’s impassioned plea to spare his life falls on deaf ears. Decker responds that he has been ready for death since the day he lost his crew, and his shuttle is annihilated as it approaches Planet Killer. Spock expresses sympathy, but Kirk muses that Decker’s sacrifice was in vain until a minor power drop in the machine catches their attention. Despite Spock’s concerns, Kirk decides to stay on board to attempt the maneuver again with the more powerful Constellation.

Kirk’s daring move depends on the Enterprise managing to transport him from the exploding ship in exactly 30 seconds. Scott cautions that it’s a delicate system to trust with someone’s life, but he manages to repair the faulty transporters on the Enterprise at the last minute, allowing Kirk to be saved before the USS Constellation explodes, effectively destroying the Planet Killer.

Just before his usual sarcastic farewell, Kirk affirms that Decker is to be reported as missing in action, a sacrifice made on duty. He further speculates that Decker might have been the first to employ what amounted to an H-bomb, Earth’s Doomsday Machine, for beneficial outcomes.

Why is the Doomsday Machine so popular?

The ‘Doomsday Machine’ episode from Star Trek is highly praised due to its effective implementation of a basic yet impactful idea: the crew of the Enterprise encounter an enigmatic, overwhelmingly powerful, and seemingly unbeatable adversary. This premise remains compelling even today, more than half a century after numerous genre TV shows and films have explored similar themes.

The tale bears resemblance to Arthur C. Clarke’s 1973 novel “Rendezvous with Rama,” where a colossal, enigmatic cylindrical spaceship arrives in our solar system. Unlike the Planet Killer, which is clearly destructive, what makes these stories alike revolves around how various humans react to this mysterious entity rather than delving into its origins or purpose.

“The Doomsday Machine” offers a gripping tale filled with unexpected turns, risky moves, suspense, heartfelt moments, and a collection of iconic character traits. Spock frequently employs his logical reasoning, while McCoy engages in a memorable conversation on the bridge with the science officer despite being underutilized. Kirk, away from his ship for much of the story, emerges as a dynamic and decisive commander who stands in stark contrast to the emotionally traumatized Decker. While the commodore’s decisions lead to the loss of his entire command, Kirk consistently demonstrates trust in his crew – a trust that is rewarded. The scene where Spock appeals to logic and Kirk urges his friend ‘We are stronger together than apart’ is a priceless moment in Star Trek history.

In the character of Decker, skillfully portrayed by William Windom, “Star Trek” subtly paved a path that turned out to be a significant element within the series. He was viewers’ initial encounter with a Starfleet officer, specifically one of higher rank than captain, grappling with the repercussions of his choices. These ramifications took a destructive form reminiscent of Khan Noonien Singh’s campaign in “Star Trek II: The Wrath of Khan.” Norman Spinrad, author of “The Doomsday Machine,” acknowledged the impact of Herman Melville’s “Moby-Dick” on his tale, which later influenced “Star Trek II.” This theme of obsession can also be observed in Picard’s battles with assimilation in “Star Trek: The Next Generation,” and the struggles between Eddington and Sisko in “Star Trek: Deep Space Nine.

In essence, “The Doomsday Machine” from Star Trek: The Original Series serves as a central motif. This show often reflected the concerns and conflicts of the mid-1900s, transposed into the 23rd century. Particularly in “The Doomsday Machine”, we find echoes of the dawning atomic era and strategic nuclear arsenals during the Cold War, a topic similarly addressed in Stanley Kubrick’s Dr. Strangelove three years prior. It is this escalating armament that Captain Kirk employs, in the distant future, to safeguard countless lives.

Did the Doomsday Machine Appear In Star Trek Again?

Star Trek: What Is The Doomsday Machine?

The Mysterious Planet Destroyer, remarkably, has yet to reappear on the series, even though the final scene hinted at other destructive devices traversing the cosmos. Yet, its intrigue was simply too compelling for the broader universe not to explore further.

According to “The Fifty-Year Mission: The Next 25 Years,” an unauthorized reference book, it’s been proposed that J. Michael Straczynski and Bryce Zabel’s idea for a new Star Trek series in 2004 would have revisited the moral quandaries surrounding Planet Killer, a topic it had previously addressed.

The Destroyer of Worlds has made appearances in various Star Trek video games, such as ‘Star Trek: Shattered Universe’, ‘Starfleet Command’, ‘Starship Creator’, and ‘Star Trek: 25th Anniversary’.

Lately, the weapon has been reintroduced in Star Trek Online within the narrative of the Temporal Cold War, appearing in missions such as “The Doomsday Device,” “The Heart of the Issue,” and “Days of Despair.

As a dedicated Star Trek gamer, I can’t help but be drawn to the enigma that is the Planet Killer. In the realm of non-official tales, it has become an unstoppable force, and its connection to one of Star Trek’s other formidable threats only deepens the mystery.

Peter Davids’ novel “Vendetta” implies that the machine in question was created as the ultimate weapon to overpower the Borg, and that the Enterprise had thwarted the development of a prototype on its journey towards Borg territory. The theory is advanced that this self-destructing device was designed for the annihilation of assimilated worlds. Subsequent books, “Armageddon’s Arrow” and “Before Dishonor,” delve deeper into this concept and its importance as a weapon capable of destroying the Borg.

In a new twist for Wildstorm’s Star Trek comics, the USS Voyager once again faces off against another planet-devouring entity, reminiscent of earlier sequels. This time, the story revisits and challenges Captain Kirk’s previous method of dealing with such threats, albeit in a more abstract manner. However, when their attempts to repeat Kirk’s strategy prove futile, Captain Janeway’s crew devises an innovative solution: they covertly send the EMH Doctor, untraceable by sensors, into the machine to inject it with Borg nanoprobes. The planet killer is eventually neutralized, thanks to this clever virus-like tactic.

Ever since the ‘Planet Killer’ has been a captivating enigma in the original Star Trek series from the 1960s, there’s always the possibility that this popular franchise could explore its roots in the future.

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2024-10-18 23:04