The sun is the center of our solar system, around which the planets of the star system revolve. Under the sun can be understood as any star, and our Sun. This is a huge mass of hot gas, which burns for billions of years under the influence of a thermonuclear reaction. The sun emits a huge amount of heat and light, so (and other good circumstances) may exist on Earth life (and possibly on other planets of the Universe). Our Sun belongs to the type of yellow dwarf spectral class, and the surface temperature is 6000 Kelvin.
The fact that the life cycle of our star, the Sun, will one day come to its end is a well – known fact. According to scientists, this cycle is about 10 billion years. The current age of our sun is approaching the mark of 5 billion years. This leads to a very interesting and important question: what exactly will happen when the Sun reaches its limit? It all starts with the fact that over time the star will recycle all of its hydrogen into helium. After that, it will start to die. Fortunately for us, it will happen very soon.