DEEP SPACE NINE 1993-1999 SEASON ONE AIRED - 1993 Benjamin Sisko is assigned to command Deep Space Nine, a former Cardassian space station orbiting the planet Bajor -- and a wormhole to the Gamma Quadrant. SEASON TWO AIRED - 1993-1994 The crew of DS9 continues to maintain a Federation presence in the hostile region, and discover a powerful new enemy in the Gamma Quadrant. SEASON THREE AIRED - 1994-1995 Odo finds his people, and learns that they are at the center of the Dominion -- an alliance of Gamma Quadrant worlds hostile to the Federation. SEASON FOUR AIRED - 1995-1996 Lieutenant Commander Worf is transferred to DS9 and joins the crew, as hostilities with the Dominion increase. SEASON FIVE AIRED - 1996-1997 Odo struggles with his identity, while the Federation and the Dominion inch closer and closer to all-out war. Sisko pursues of an officer who betrayed him. SEASON SIX AIRED - 1997-1998 The Federation engages in a war with the Dominion, with Deep Space Nine on the Gamma Quadrant front line. The price of the war is great indeed. SEASON SEVEN AIRED - 1998-1999 The Dominion War comes to its culmination, as Sisko faces an uncertain future. Dukat launches a scheme to overthrow the Prophets.