The Sun our star

The Sun is a medium-sized star that occupies the center of our planetary system.

The mass of the Sun is approximately 300,000 times greater than the mass of the Earth and its diameter is about 109 times the Earth. For its part, the surface temperature of the Sun reaches 6000 º C.  

The rate of solar rotation is higher at its equator and decreasing towards the poles. Thus, in the equator of the Sun the day lasts about 25 earth days; To 45 solar latitude, is 28 days, and at its poles about 35 days. 

On the surface of the Sun, appear the so-called sunspots that last a few days and are less hot areas of the surface of the star. These spots appear in cycles of 11 years and these cycles present a maximum and a minimum of spots, being the cause of electromagnetic disturbances in the earth, especially in the radio and tv communications.