1. The sun is the origin of human life; the origin of life requires energy, and the maintenance and continuation of life also requires energy. Certain temperature conditions are also necessary for the survival and sustainability of organisms. At a minimum, the water should remain liquid. The sun brings us heat and light and provides the necessary energy.
The sun can give people warmth, improve blood circulation, and promote the normal secretion of sweat and sebum. Sunlight can kill bacteria and maintain normal bacterial flora on the surface of human skin. Photosynthetic organisms form the basis of the food chain. Energy on earth is provided directly or indirectly by sunlight.
2. Many geological and meteorological disasters on earth are linked to solar activities, such as solar wind, sunspots, solar flares,skin lesions, etc.
3. , people became aware of solar energy. For direct or indirect use, the simplest is solar water heater, then solar power generation and using solar power to drive vehicles.
Detailed information:
The Sun is currently passing through the local bubble of Orion Arm at inner edge of the Milky Way Local interstellar clouds in the region. There are 50 closest star systems within 17 light years of Earth (the closest star to the Sun is a red dwarf called Proxima Centauri, located about 4.2 light years away).
The sun is a yellow dwarf star (G2V spectrum). The lifespan of a yellow dwarf star is approximately 10 billion years. The current sun is approximately 4.57 billion years old. In about 5 to 6 billion years, the hydrogen inside the sun will be almost completely evaporated.tapped and the core of the sun will collapse, causing the temperature to rise. This process will continue until the sun begins to fuse helium into carbon.
Although helium fusion produces less energy than hydrogen fusion, it is also hotter, so the outer layers of the sun will expand and release some of the energy. external atmosphere in space. When the conversion to new elements is complete, the mass of the Sun will have decreased slightly and the outer layers will have extended to the current orbits of the Earth or Mars (which will then be further from the Sun due to the drop in mass of the Sun). .