Major Samantha Carter is a fictional character from the science fiction television series Stargate SG-1. She is portrayed as a brilliant astrophysicist and a skilled military officer in the United States Air Force. Her expertise in science and technology plays a crucial role in the team's missions through the Stargate, a device that allows for interstellar travel. Carter is known for her strong leadership skills and dedication to her team, often balancing her scientific knowledge with military strategy. Throughout the series, she develops close relationships with her teammates, including Colonel Jack O'Neill and Teal'c, while also facing various challenges from alien species and threats to Earth.