The Nuclear Furnace at the Sun's Heart The temperature in the Sun's core is about 27 million degrees Fahrenheit (15 million ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

After solar activity spent several decades on the decrease, the number of sunspots, flares and coronal mass ejections is once again on the increase. The sun has grown increasingly active over the past ...