Sol, simply known as The Sun, is the only star in the Solar system. It is a regular main sequence star with eight planets in its orbit and is estimated to be around 4.6 billion years old. The average distance between Sol and Earth is about 150 million kilometers (93 million miles), and it takes light about eight minutes to reach Earth.
In 1999, the star's Solar flares were directly responsible for sending SG-1 thirty years in the past, to the year 1969. However, they used a similar solar flare from that year to return to the present. (SG1: "1969")