సూర్యుడు - the sun documentary - the journey of the universe

How the sun works? the sun is the center of our solar system and makes up 99.8 percent of the mass of the entire solar system. as a star, the sun is a ball of gas (92.1 percent hydrogen and 7.8 percent helium) held together by its own gravity. many spacecraft constantly observe the sun, helping us keep an eye on space weather that can affect satellites and astronauts.