Venus

The sun is a star located at the center of the Solar System and is the primary source of energy for all life on Earth. It has a diameter of approximately 1.39 million kilometers and a mass of about 1.99 x 10^30 kilograms. The sun's temperature reaches around 15 million degrees Celsius at its core, where nuclear fusion reactions take place. These reactions produce enormous amounts of heat and light that are emitted by the sun and travel through space to reach Earth. Without the sun, life on Earth would not be possible.