The song is about an astronaut named Major Tom, who drifts further away from Earth in space and increasingly feels isolated.
It conveys the feelings of freedom and loneliness in the infinite space, while Major Tom reflects on the purpose of his mission and overcomes Earth's gravity.
The disruption of the connection to the control center symbolizes Major Tom's inevitable fate and the premonition of his imminent end.
The repeated lines 'Completely detached from the Earth, the spaceship floats weightless' illustrate Major Tom's increasing distance and isolation in space.
The song ends with Major Tom's premonition that his end is near, as he continues to drift alone and weightless in space.