Stargate SG-1 (1997–2007)
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A Matter of Time 

Stargate Command opens a wormhole to a planet with a black hole in orbit.



(developed for television by), (developed for television by) | 2 more credits »

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Episode cast overview:
Dr. Daniel Jackson
AF Colonel Frank Cromwell (as Marshall Teague)
Dr. Janet Fraiser
Lieutenant Graham Simmons
Major Paul Davis
Sgt. Siler
SF Guard
Major Boyd


SG10 are on a planet when one of the binary stars becomes a black hole. They try to escape by dialing Earth, but fail to get back. The SGC sends a probe and sees the black hole, but then they find they cannot disengage the wormhole and the gravitational effects are starting to effect Earth. Written by Anonymous

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Plot Keywords:

ancient astronaut | See All (1) »






Release Date:

29 January 1999 (USA)  »

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Technical Specs


Sound Mix:

| (Dolby 5.1)


Aspect Ratio:

16 : 9
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Did You Know?


First appearance in the series of Colin Cunningham as Major Paul Davis. See more »


The cold open is supposed to depict the heavier one of the dual stars sucking matter from its companion until the gravitational limit is exceeded and collapsing to form a black hole. While that is indeed possible (as far as current physical understanding surmises), the star collapse takes the form of a nova or even supernova, a huge thermonuclear explosion on a truly stellar scale. Time dilation would not be a problem on a planet orbiting a star that goes nova, but the intense radiation, debris and shock wave would annihilate any planet nearby within minutes. See more »


Sam Carter: When you ordered Colonel O'Neill to wait 5 minutes, you were really telling him to wait 6 hours, maybe more!
General George S. Hammond: Captain, relativity gives me a headache!
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Featured in Stargate SG-1: Disclosure (2003) See more »


End Title
Written by Joel Goldsmith
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User Reviews

Time Is Relative
5 September 2015 | by See all my reviews

The SGC receives a signal in slow motion from SG-10, and General Hammond sends a probe to the planet. Soon the SGC discovers that the SG-10 is under the effect of a black hole and unsuccessfully tries to disengage the Stargate. Further, they discover that the black hole is affecting the SGC through the wormhole. When Colonel Cromwell and his team arrive at the SGC, they learn that time is passing slowly near the Stargate. General Hammond is summoned by the President and receives order to blow- up the SGC. However Sam is convinced that the destruction of the SGC will be ineffective and tries to find another solution. Will she succeed?

"A Matter of Time" is among the best episodes of Stargate SG-1. It is very funny to see Sam trying to explain to Jack what a wormhole is. The apparently hopeless situation is well-resolved in the end. My vote is eight.

Title (Brazil): "A Matter of Time"

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