The Sun is the Source of all Energy. Without Sol, Life on earth is not possible. The thermosolar fusion reaction happening in the Sun maketh it important. So doth the diurnal motion which perpetually keepeth Time. The only Scientific, Visible Deity is the Sun and the ancients averred that the Rising Sun is the Creator , Brahma Swaroopa Udaye, Mid Day Sun is the Destroyer, Madhyahneshu Sada SIva and that the Setting Sun is the Preserver, Astha Kale Swayam VIshnu. No wonder the Lord declared that I am the Sun, Jyothisham Ravir Amshuman !