The Sun - හිරු
The sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radiation, and is the most important source of energy for life on Earth. • Surface temperature: 5,772 K • Distance to Earth: 149.6 million km • Radius: 696,340 km • Age: 4.603 billion years • Mass: 1.989 × 10^30 kg • Gravity: 274 m/s² • Spectral type: G2V Hottest part core The hottest part of the Sun is its core, where temperatures top 27 million degrees Fahrenheit (15 million degrees Celsius). Location The Sun is located in the Milky Way galaxy in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm. The Sun orbits the center of the Milky Way, bringing with it the planets, asteroids, comets, and other objects in our solar system. Radiation Solar radiation, often called the solar resource or just sunlight, is a general ...