SB 5.20.46
deva-tiryan-manusyanam
sarisrpa-savirudham
sarva-jiva-nikayanam
surya atma drg-isvarah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
All living entities, including demigods, human beings, animals, birds, insects, reptiles, creepers and trees, depend upon the heat and light given by the sun-god from the sun planet. Furthermore, it is because of the sun’s presence that all living entities can see, and therefore he is called drg-isvara, the Personality of Godhead presiding over sight.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In this regard, Srila Visvanatha Cakravarti Thakura says, surya atma atmatvenopasyah. The actual life and soul of all living entities within this universe is the sun. He is therefore upasya, worshipable. We worship the sun-god by chanting the Gayatri mantra (om bhur bhuvah svah tat savitur varenyam bhargo devasya dhimahi). Surya is the life and soul of this universe, and there are innumerable universes for which a sun-god is the life and soul, just as the Supreme Personality of Godhead is the life and soul of the entire creation. We have information that Vairaja, Hiranyagarbha, entered the great, dull, material globe called the sun. This indicates that the theory held by so-called scientists that no one lives there is wrong. Bhagavad-gita also says that Krsna first instructed Bhagavad-gita to the sun-god (imam vivasvate yogam proktavan aham avyayam). Therefore the sun is not vacant. It is inhabited by living entities, and the predominating deity is Vairaja, or Vivasvan. The difference between the sun and earth is that the sun is a fiery planet, but everyone there has a suitable body and can live there without difficulty.
Thus end the Bhaktivedanta purports of the Fifth Canto, Twentieth Chapter, of the Srimad-Bhagavatam, entitled “Studying the Structure of the Universe.”