The Sun’s core is around 13600000 degrees Celsius!The Sun generates huge amounts of energy by combining hydrogen nuclei into helium. This process is called nuclear fusion.Because of the Sun’s huge influence on Earth, many early cultures saw the Sun as a deity or god. For example, Ancient Egyptians had a sun god called Ra while in Aztec mythology there is a sun god named Tonatiuh.The Sun produces a solar wind which contains charged particles such as electrons and protons. They escape the Sun’s intense gravity because of their high kinetic energy and the high temperature of the Sun’s corona (a type of plasma atmosphere that extends into space).Planets with strong magnetic fields such as Earth manage to deflect most of these charged particles as they approach.A solar eclipse occurs when the Moon is between the Sun and the Earth.
The SUN is just ONE of about 100 billion STARS in our GALAXY.2. It has a DIAMETER of 1,390,000 km3. Its CORE temperature is 15 million º C.4. Its SURFACE temperature is 5,500 ºC. Cooler (3,800 ºC) surface areas are called SUN SPOTS. 5. It is the LARGEST object in the SOLAR SYSTEM and makes up 99.8% of the total MASS of the Solar System.6. It consists of 75% HYDROGEN and 25% HELIUM.7. The ENERGY output of the Sun is about 386 billion megawatts and is produced by NUCLEAR FUSION, using Hydrogen as fuel.8. Apart from HEAT and LIGHT, the Sun also emits a stream of CHARGED PARTICLES called the SOLAR WIND. The Solar Wind:-
Causes Radio INTERFERENCE at certain times b. - Produces the AURORA BOREALIS or "The NORTHERN LIGHTS" c. - Causes the characteristic TAILS of COMETS. d. - Alters the TRAJECTORY of SPACECRAFT9. The Sun is about 4.5 BILLION YEARS old. It will probably continue to exist in its present FORM for about another 5 BILLION YEARS before RUNNING out of HYDROGEN.10. There are NINE planets orbiting the SUN (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto)