A Matter of Time

S2, E16: While attempting to save the members of SG-10 from a black hole on planet P3X-451 the SG-1 team activates the Stargate and exposes themselves to the hole's gravitational pull. Trying to break free the team shuts down the gate's power and in the ensuing explosions Teal'c and Daniel are badly injured. Even without power the black hole's gravity continues to draw the SGC closer to the swirling wormhole. With the intense gravity field warping the space/time continuum the SGC loses contact with the outside world and the Pentagon sends O'Neill's former mate Col. Cromwell to investigate. Cromwell is tormented with guilt for deserting O'Neill during a Soviet mission and volunteers to partner him in the attempt to save the SGC. Time slows to a near stand-still inside the SGC where only O'Neill and Cromwell are left. Carter scrambles for a solution before the SCG and then the Earth are torn apart by the black hole's gravitational tides.