My interpretation:

The Physical Sun, the Heart of the Sun, the Central Spiritual Sun

Gayatri

O Thou Who givest sustenance to the universe,

From Whom all things proceed,

To Whom all things return,

Unveil to me the face of the true Spiritual Sun

Hidden by a disc of golden Light

That I may know the Truth

And do my whole duty

As I journey to Thy sacred feet.

VIDEO: https://www.youtube.com/watch?v=vGgYwgzJTIg