The Gamma Quadrant is one of the four quadrants of the Milky Way galaxy, located opposite the Alpha Quadrant. It is primarily explored in the science fiction series Star Trek: Deep Space Nine. The Gamma Quadrant is accessible through the Bajoran Wormhole, which connects it to the Alpha Quadrant. This quadrant is home to various alien species and civilizations, including the Dominion, a powerful empire that plays a significant role in the series. The Gamma Quadrant features diverse planets and cultures, contributing to the rich storytelling and exploration themes in the Star Trek universe.