The Sun is star in our closest proximity and provides almost all available energy on Earth. Solar energy originates from nuclear reactions in core of the sun, where the temperature reaches 15 million Celsius degrees. It is all about fusion, where hydrogen atoms merge and as a result helium is produced with large amounts of energy released. Every second about 600 million tons of hydrogen are being converged into helium, wherein the weight of about 4 million tons of hydrogen is being transformed into energy.
