Definition: The word "Ellen Tracy" refers to a former United States Navy pilot and astronaut who achieved a record-breaking 186-day mission in space aboard the Apollo 15 lunar module. She was also a NASA astronaut, serving as Command Module Pilot on Apollo 14 and 27. Ellen Tracy is best known for her time aboard the Apollo 15 mission, where she spent 186 days orbiting the Earth. During this period, Tracy flew experiments, explored deep space, and made significant scientific discoveries. She was awarded the NASA Gold Medal and was inducted into the American Astronaut Hall of Fame. Ellen Tracy's record-breaking mission set a new standard for female astronauts, as it also marked her first solo trip to the Moon. Her flight was credited with advancing knowledge about the lunar surface, particularly regarding its geological composition and potential habitability. Tracy became known for her humor, intelligence, and adventurous spirit during her time on the moon. She is remembered as an inspiration to many young women in space exploration and STEM fields.