When Worlds Collide (1951)

Approved  |   |  Family, Sci-Fi  |  30 November 1951 (Finland)
Your rating:
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Ratings: 6.7/10 from 4,939 users  
Reviews: 95 user | 48 critic

As a new star and planet hurtle toward a doomed Earth, a small group of survivalists frantically work to complete the rocket which will take them to their new home.



(screenplay), (novel), 1 more credit »
Watch Trailer
0Check in

Watch Now

From $2.99 on Amazon Video

Won 1 Oscar. Another 1 nomination. See more awards »



Learn more

People who liked this also liked... 

Certificate: Passed Action | Adventure | Family
    1 2 3 4 5 6 7 8 9 10 7.7/10 X  

A starship crew goes to investigate the silence of a planet's colony only to find two survivors and a deadly secret that one of them has.

Director: Fred M. Wilcox
Stars: Walter Pidgeon, Anne Francis, Leslie Nielsen
Adventure | Family | Fantasy
    1 2 3 4 5 6 7 8 9 10 7/10 X  

An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.

Director: Henry Levin
Stars: James Mason, Pat Boone, Arlene Dahl
Adventure | Family | Sci-Fi
    1 2 3 4 5 6 7 8 9 10 6.9/10 X  

A scientist is nearly assassinated. In order to save him, a submarine is shrunken to microscopic size and injected into his blood stream with a small crew. Problems arise almost as soon as they enter the bloodstream.

Director: Richard Fleischer
Stars: Stephen Boyd, Raquel Welch, Edmond O'Brien
Adventure | Family | Sci-Fi
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  

During the Civil War a group of Union soldiers and two Confederates escape the stockade using a hot air balloon and end up on a strange Pacific island.

Director: Cy Endfield
Stars: Michael Craig, Joan Greenwood, Michael Callan
Adventure | Drama | Family
    1 2 3 4 5 6 7 8 9 10 7.2/10 X  

A ship sent to investigate a wave of mysterious sinkings encounters the advanced submarine, the Nautilus, commanded by Captain Nemo.

Director: Richard Fleischer
Stars: Kirk Douglas, James Mason, Paul Lukas
Action | Adventure | Family
    1 2 3 4 5 6 7 8 9 10 5.9/10 X  

A research vessel finds a missing ship, commanded by a mysterious scientist, on the edge of a black hole.

Director: Gary Nelson
Stars: Maximilian Schell, Anthony Perkins, Robert Forster
Adventure | Comedy | Family
    1 2 3 4 5 6 7 8 9 10 5.2/10 X  

A ten-year-old boy and Robby the Robot team up to prevent a Super Computer from controlling the Earth from a satellite.

Director: Herman Hoffman
Stars: Richard Eyer, Philip Abbott, Diane Brewster
Adventure | Family | Fantasy
    1 2 3 4 5 6 7 8 9 10 7.4/10 X  

The legendary Greek hero leads a team of intrepid adventurers in a perilous quest for the legendary Golden Fleece.

Director: Don Chaffey
Stars: Todd Armstrong, Nancy Kovack, Gary Raymond
Family | Fantasy | Action
    1 2 3 4 5 6 7 8 9 10 7.2/10 X  

When a princess is shrunken by an evil wizard, Sinbad must undertake a quest to an island of monsters to cure her and prevent a war.

Director: Nathan Juran
Stars: Kerwin Mathews, Kathryn Grant, Richard Eyer
Action | Adventure | Drama
    1 2 3 4 5 6 7 8 9 10 6.3/10 X  

Sinbad The Sailor sails to deliver a cursed prince to a dangerous island in the face of deadly opposition from a powerful witch.

Director: Sam Wanamaker
Stars: Patrick Wayne, Jane Seymour, Taryn Power
Show Boat (1951)
Certificate: Passed Drama | Family | Musical
    1 2 3 4 5 6 7 8 9 10 7/10 X  

The daughter of a riverboat captain falls in love with a charming gambler, but their fairytale romance is threatened when his luck turns sour.

Director: George Sidney
Stars: Kathryn Grayson, Ava Gardner, Howard Keel
Family | Sci-Fi
    1 2 3 4 5 6 7 8 9 10 5.1/10 X  

An atomic explosion awakens Gammera--a giant, fire-breathing turtle monster--from his millions of years of hibernation. Enraged at being roused from such a sound sleep, he takes it out on Tokyo.

Directors: Sandy Howard, Noriaki Yuasa
Stars: Albert Dekker, Brian Donlevy, Diane Findlay


Complete credited cast:
Richard Derr ...
Rachel Ames ...
Julie Cummings (as Judith Ames)
Stephen Chase ...
Sandro Giglio ...


David Randall is a carefree ladies man and skilled pilot who finds he has been let in on the greatest and most terrible secret in the world when he is paid to deliver some mysterious pictures from one eminent astronomer to another. The recipient, Dr. Hendron, confirms the awful findings of the sender: the star Bellus will collide with Earth and wipe out all of humanity. Despite widespread disbelief, two philanthropists give Dr. Hendron some of the money he needs to build a rocket ship that will, at least theoretically, take them to Zyra, a planet which is orbiting Bellus which may or may not be habitable for humans. The rest of the money comes from Sydney Stanton, a wheelchair-bound old man, who insists he come along, despite the severe limitations on the number of passengers and amount of cargo. Meanwhile, as doomsday approaches, Randall is surprised to find himself in a love triangle with Dr. Hendron's daughter and her fiancé. Humanity is in peril, and only a modern-day Noah's ark, ... Written by J. Spurlin

Plot Summary | Plot Synopsis


Romance! Thrills! Adventure! See more »


Family | Sci-Fi


Approved | See all certifications »

Parents Guide:





| | |

Release Date:

30 November 1951 (Finland)  »

Also Known As:

Cuando los mundos chocan  »

Filming Locations:


Box Office


$936,000 (estimated)

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:

(Western Electric Recording)



Aspect Ratio:

1.37 : 1
See  »

Did You Know?


George Pal wanted to film the novel's sequel, "After Worlds Collide," which depicted the struggle of human survivors on the alien planet. However, the failure of his film Conquest of Space (1955) badly damaged his career and the sequel was never made. See more »


The red handrails on the gangplank disappear when the men board the ship. See more »


[first lines]
Narrator: [spoken over a shot of outer space] Needles in a heavenly haystack. There are more stars in the heavens than there are human beings on Earth. Through telescopes men of science constantly search the infinitesimal corners of our solar system seeking new discoveries, hoping to better understand the laws of the Universe. Observatories dedicated to the study of astronomy are set in high and remote places, but there is none more remote than Mt. Kenna Observatory in this part of South ...
See more »


Referenced in Highway (2002) See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

Good Despite its Flaws
20 February 2004 | by (Los Angeles, California) – See all my reviews

When I was younger, this was one science fiction film that definitely made an impression on me. This was one of those where I actually was scared that one day my world would come to an end. However, as I got older I realized that this was just a movie, but still it is one of the best genre films of its era. Sure, it has its flaws (especially the painted background at the end), but still it is a film that was a product of its time and it will always be one of my favorites.

24 of 25 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
No Black People at the Camp muitoconfidencial
Remake? PhrenicGermal
No logic in the selection process. rjackson331
Movie inspired by then Velikovsky fad r-c-s
wheelchair spaseebah
disaster spree piper3893
Discuss When Worlds Collide (1951) on the IMDb message boards »

Contribute to This Page