Prime purpose of this lecture is to present on Sun Seasons. Here briefly describe on Properties of the Sun; Influence on Earth: Gravity; Light and Solar wind and Life cycle of the Sun. Many people believe that Earth is closer to the sun in the summer and that is why it is hotter. And, likewise, they think Earth is farthest from the sun in the winter. The Sun contains 99.8% of all of the mass in our Solar System.