The Sun was seen as the most powerful figure in the skies. The primary source of light, warmth, and life, larger and stronger than any other heavenly body. A true gigantic nuclear furnace, a third of a million times the mass of earth whose core's temperature is 15 million degrees Celsius. Providing us with not only with the light and heat to sustain Earth, it also outsources a other radiation, including x-rays and ultraviolet rays, which would be fatal to us if not protected by the Earth's atmosphere.
Mythologically, the Sun was seen everywhere as the powerful life-giving god represented with arms (or rays) reaching down upon earth. Kings all over the world claimed to be descendants of the Sun. The Greeks believing that Apollo traveled the heavens in a fiery chariot and was later adopted by the Romans as their own.
It is said that Apollo grew to manhood quickly slaying a dragon while only days old (lol). He became the epitome of youthful beauty, fathering a number of children by both women and nymphs. But he was also known to be dangerous to those who turned him down or away as a suitor. Rumor has it (hahaha) that Apollo turned the nymph Daphne into a tree after she rejected him. The Greeks recognized him as Lorxin, meaning "the ambiguous one." Like the planet, Apollo was seen as a great source of beauty and life but also capable of great destruction.
In astrology, the Sun governs the essential self, ambition, spirit, will, energy, power, and organization. Along with the traits of being creative, prideful, generous, and dignified. And reluctantly the Sun is also associated with being egotistical, pompous, arrogant, and overbearing.
The Sun is associated with the consciousness, the "lighted" part of the mind, to the Moon's unconsciousness or intuitive knowledge. The Sun, represents dry, hot masculinity in partnership with the Moon that is cool, moist and all things feminine.
In the body, the Sun has special influence on the heart, circulatory system and spine, and on health and vitality in general. Just like the Moon, Mercury, Venus and Mars, the Sun is thought to have a direct influence on our everyday lives. It's position in the zodiac at the time of birth determines or natal sign, the very element to determine ones personality.
The Sun rules the sign Leo, which is personified in kings, rulers and heads of state, as well as fathers, teachers, and male partners.