Stargate SG-1 (1997–2007)
6 user 1 critic


On an astronomical black hole observation mission SG-1 finds a fatal bacterial mass-epidemic on a planet where the natives told then incredulous Daniel months ago the coming solar eclipse ... See full summary »


Mario Azzopardi


Brad Wright (developed for television by), Jonathan Glassner (developed for television by) | 1 more credit »

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Episode cast overview:
Richard Dean Anderson ... Colonel Jack O'Neill
Michael Shanks ... Dr. Daniel Jackson
Amanda Tapping ... Captain Samantha Carter
Christopher Judge ... Teal'c
Don S. Davis ... Major General George Hammond
Teryl Rothery ... Dr. Janet Fraiser
Katie Stuart ... Cassandra
Gary Jones ... Sgt. Walter Harriman - Technician
Kevin McNulty ... Dr. Warner


On an astronomical black hole observation mission SG-1 finds a fatal bacterial mass-epidemic on a planet where the natives told then incredulous Daniel months ago the coming solar eclipse would bring disaster. They also take home to the Cheyenne mountain base a surviving, fairly healthy orphaned young girl, who is named Cassandra and awakes Sam's maternal instinct. The naquadah traces found in her blood turn out to have made her immune, but after she has a seizure are diagnosed to constitute a huge bomb, somehow triggered by rescuing her, the whole thing must be planned as a 'Trojan Horse' by the goa'uld. Sam takes the prospect of sacrificing Cassie personal and is prepared to take personal risks... Written by KGF Vissers

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Release Date:

31 October 1997 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16 : 9
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Did You Know?


The Douglas McLean Memorial Observatory on planet P3X 987 is named after the series art director, Doug McLean. See more »


When Jack first looks at his watch during countdown to explosion, it says 7:42. The next time he looks at it, presumably seven seconds later, it says 7:41. See more »


Dr. Daniel Jackson: So, what exactly are we gonna see after this eclipse begins? I mean, it is black, and it is a hole.
Jack O'Neill: Well, it might be a black hole.
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Featured in Stargate SG-1: Politics (1998) See more »


End Title
Written by Joel Goldsmith
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User Reviews

Corny Trojan Horse
29 May 2015 | by claudio_carvalhoSee all my reviews

Jack, Sam, Daniel and Teal'c travel to a planet to meet the SG-7 and witness a solar eclipse and a black hole through a telescope. However they find the inhabitants and the SG-7 dead and Dr. Janet Fraiser counts almost 1,500 casualties. Out of the blue, they find a girl in a field and she is the only survivor. Jack and Teal'c decide to stay in the facility to see the phenomenon while the rest of the team returns with the girl. Sam gets close to the girl called Cassandra, but soon Dr. Fraiser discovers that the Goa'uld have implanted a Naquadah bomb in Cassandra to destroy the SGC. Further, she cannot be sent back to her planet since the Stargate will dissolve the bomb. What shall the SGC do?

"Singularity" has a promising beginning and development with a story tense and sentimental. Unfortunately the writers choose the easy and commercial option of a corny and senseless conclusion, ruining one of the best episodes of this series. My vote is three.

Title (Brazil): "Singularity"

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