Major Tom Brown is a fictional character from the song "Space Oddity" by David Bowie. He is an astronaut who embarks on a space mission, symbolizing exploration and the unknown. The character's journey reflects themes of isolation and the human experience in the vastness of space. In the song, Major Tom loses communication with ground control, representing a disconnect from reality. His story has inspired various interpretations and adaptations in popular culture, highlighting the impact of space exploration on human emotions and relationships. Major Tom has become an iconic figure in music and science fiction.