THE SUN.

The sun is the closest star to Earth and is about 150 million kilometers away. Compared to other stars, they are very small, but for us, its the source of our lives.

Solar Eclipse.

The sun's diameter is 1392,000 km, which is 109 times greater than the Earth's diameter and is 333,000 times heavier than Earth. And the temperature in the core of the sun is 14000000 degrees Celsius, and this is enough to evaporate any solid object approaching its surface, while the temperature on the surface of Earth at a maximum of 50 degrees Celsius. The heart of the sun is composed of hydrogen gas, and the high temperature of hydrogen inside the sun leads to very complex reactions, resulting in the transformation of the mass into energy, such as heat, light emitted and solar flares. These interactions are known as Fusion.

The Sun.

 The surface of the sun is called the "photosphere" and is much cooler than the sun's inner core, where the surface temperature is 6000 degrees Celsius. This surface appears to be punctuated by gases and substances released from the core of the sun to the surface. The so-called "solar flares" often ignited out from the surface of the sun and visible when a total solar eclipse occurs, blocking the sun's light to Earth because of the moon's standing perpendicular to the sun in front of Earth.

Solar Flares.

The sun revolves around its axis every 25 days. Scientists measure this movement by observing some black sunspots on the surface of the sun that is clearly visible on the surface. These spots appear dark because they are the coldest spots on the surface and are less by 2000 degrees Celsius from the rest of the surface. The solar dark spots are accompanied by bright spots, as well as the great solar flares emitted out of the surface of the sun. They are short lasting but have a really wonderful view.

Venus Transit.

 The solar dark spots increase in number every 11 years and then disappear again and then begins to reappear. Accompanied by the peak period of the appearance of sun dark spots, accompanied by a lot of solar eruptions and gloss. The solar wind is disruptive to television and radio broadcasting on Earth and disrupt the transmission of radio signals. The size of the solar Flares varies, some are a few kilometers in diameter, others are larger than Earth's diameter by many times. The dark and bright spots can be monitored by dropping the image of the sun on a bright white cardboard piece by the telescope and do not try to look directly at the sun because it damages the eye.