Interesting facts about Sun

The Sun is one among the 200 billion stars in our Milky Way galaxy. The Sun is one among the 6000 stars, which is visible to naked eye from the Earth. The mass of Sun is  1.989 x 1030 kg (Approximately 2 million trillion trillion kilograms). The Sun's energy output is 386 billion billion megawatt. The Earth receives 94 billion megawatt of energy from Sun. This is equivalent to 40,000 times the power requirement of United states. The reaction taking place in Sun is nuclear fusion, same as a Hydrogen bomb. Each second 700 million tons of Hydrogen are converted to 695 million tons of Helium and 5 million tons of energy in the form of gamma rays. Each second the Sun loses 5 million tons of material. The Sun's temperature at its core is 14 million Kelvin. The pressure at the Sun's core is 340 billion times the pressure at the Earth's atmosphere. The density of matter at the Sun's core is about 150 times the density of water in the Earth. It takes up to 50 million years for the energy produced at the core of the Sun to reach its surface. If the Sun were to stop producing energy today, it would take 50 million years for significant effects to be felt at Earth.