Throughout the song, Major Tom is portrayed as a heroic figure, but also a vulnerable one. He is alone in space, with no one to help him. He is cut off from communication with Earth, and his only companion is his radio.
The song begins with Major Tom acknowledging that he is in a difficult situation, and that his situation is serious. He is surrounded by "nothing but sky," and he is aware of the dangers around him.
As the song progresses, Major Tom becomes increasingly cut off from the outside world. He loses contact with his radio, and he is unable to communicate with Earth. He is left alone with his thoughts, and he begins to question his own sanity.
The song ends with Major Tom expressing a sense of peace and acceptance. He reflects on his journey, and he comes to terms with his own mortality. He is "floating in a most peculiar way" and he is "lost in space with no time or place."
Space Oddity is a powerful and evocative song that explores the human experience of space travel. It is a story of isolation and alienation, but also of hope and resilience.