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"Worlds Collide" was the second issue of the TOS Untold Voyages miniseries published by Marvel Comics in 1998. The story takes place during the second year of Captain Kirk's second five-year mission. In this story, the crew deals with the ethics of non-interference when a species faces an extinction-level event.


During the second year of the newly refurbished USS Enterprise's second five-year mission into the unknown, Commander Spock took a leave of absence to go back to Earth to look into the affairs of his ward Saavik. While Spock was away, the Enterprise went to an isolated world to observe the imminent collision between the planet and an immense asteroid.


Log entries

  • Captain's log, Stardate 7521.4
    The Enterprise has traveled to an isolated, previously unexplored M-class world on the galactic frontier, a world about to be hit by a twenty-mile-long asteroid.
    Our long-range scanners detected this rare cosmic event taking place, and we have come to observe and record it. A similar incident is believed to have occurred on Earth, millions of years ago
    ... Causing sweeping geological and ecological changes that ultimately caused the total extinction of the dinosaurs. Having detected life forms on the planet upon our arrival, I have led a landing party down to the surface, to study these beings… before the impact of the asteroid changes this world forever.
  • Captain's log, supplemental
    We continue to monitor the upcoming cataclysm on this new world—
    — and Doctor McCoy continues to voice his opposition to our non-interference.
  • Captain's log, Stardate 7521.9
    The Enterprise is en route to Vulcan, to pick up our returning science officer and then proceed to our next assignment.



Pavel ChekovAmanda GraysonJames T. KirkLeonard McCoyOmalSaavikSarekSpockNyota UhuraT'Prisunnamed Vulcans (Hellguard expedition members, Vulcan/Romulan hybrid children) • unnamed creatures
Referenced only

Starships and vehicles

air tramsUSS Enterprise (Enterprise-subclass refit Constitution-class heavy cruiser)


Earth (San FranciscoVulcan Embassy) • Vulcanunnamed planet
Referenced only
HellguardMiramanee's world

Races and cultures


States and organizations


Science and classification

asteroid deflectorclass Mecologygeneticsgeologyphaserphoton torpedoscannerscienceselective breedingtricorderviewscreen

Ranks and titles

captaindoctorensigninstructorKolinahr masterlieutenantscience officer

Other references

asteroidasteroid beltbridgecaptain's log, USS Enterprise, 2274colonycommunicationsdayembassyemotion (fear) • extinctionFederation Starfleet ranks (2270s)galaxyGolden Gate Bridgehourhumanoidice ageKolinahrlanding partylifeformlogicmeatmeditationmilemillions of years agomind meldminuteofficer's loungeplantPrime Directivequartersraces and culturesspacespeciesStarfleet uniform (early 2270s)statueta'altelekinesistimetreeuniformvalley



65 million years ago
An asteroid impact on Earth leads to devastating climate change and the extinction of the dinosaurs.
Spock rescues Saavik from Hellguard.
Saavik moves in with Sarek and Amanda Grayson on Vulcan.

Production history

April 1998
First printed by Marvel Comics.
9 July 2020
Reprinted in Graphic Novel Collection #120. (Eaglemoss)



Related stories



Published Order
Previous comic:
#1: Renewal
TOS comics (Untold Voyages) Next comic:
#3: Past Imperfect
Previous story:
Stories by:
Glenn Greenberg
Next story:
Past Imperfect
Chronological Order
Previous adventure:
The Pandora Principle
Chapter 1
Memory Beta Chronology Next adventure:

Department of Temporal Investigations
Forgotten History
Chapters 7-11
Marvel-Paramount Comics
Unlimited #1 ("Directives" & "Dying of the Light") • #2 ("Action of the Tiger" & "The Unkindest Cut") • #3 ("Message in a Bottle" & "Sins of the Fathers") • #4 ("None But the Brave" & "Inheritance") • #5"Secret Lives" & "As Flies to Wanton Boys ") • "Heart of Darkness" • "An Infinite Jest" • #8 ("The Boy", "The Warrior" & "The Veteran") • "Trekkers" • "A Piece of Reaction" Paramount Comics logo.jpg
Deep Space Nine "Judgment Day" • "Judgment Day, The Conclusion!" • "The Cancer Within, Part I" • "The Cancer Within, Part II" • "The Shadow Group" • "Risk, Part One" • "Risk, The Conclusion" • "Public Enemies, Private Lives" • "Lwaxana Troi and the Wedding of Doom" • "Four Funerals and a Wedding" • "Command Decisions" • "Day of Honor" • "Nobody Knows the Tribbles I've Seen" • "Requiem in Obsidian"
Voyager "The Storm" • "Under Ion Skies" • "Repercussions" • "Homeostasis, Part One" • "Homeostasis, The Conclusion" • "Relicquest, Part One" • "Relicquest, Part Two" • "Relicquest, Conclusion" • "Dead Zone" • "Ghosts" • "Leviathan" • "Leviathan, Part Two" • "Cloud Walkers" • "Survival of the Fittest, Part One" • "Survival of the Fittest, Part Two"
Starfleet Academy "Prime Directives" • "Liberty" • "Loyalty Test" • "War and Peace" • "Love and Death" • "Passages" • "Hide and Seek" • "" • "Return to the Forbidden Planet" • "A Prelude to War" • "Judgment" • "Renegades" • "Parents' Day" • "Betrayal" • "Origins" • "The Fall" • "Culture Clash" • "mangHom qaD" • "Between Love and Hate"
Early Voyages "Flesh of My Flesh" • "The Fires of Pharos" • "Our Dearest Blood" • "Nor Iron Bars a Cage" • "Cloak and Dagger" • "The Flat, Gold Forever" • "Immortal Wounds" • "One of a Kind" • "The Fallen" • "Futures" • "Future Tense" • "Futures" • "Now and Then" • "Thanatos" • "Nemesis"
Untold Voyages "Renewal" • "Worlds Collide" • "Past Imperfect" • "Silent Cries" • "Odyssey's End" Splashdown "Part One" • "Part Two" • "Part Three" • "Part Four"
one shots First ContactStar TreXFragile GlassOperation AssimilationReality's EndSecond ContactThe Enemy of My Enemy

External links