The+Sun+-+By+Lily

**The Sun **   __ **FACTS** __ *The Sun is the closest star to earth, it's a member of the Milky Way galaxy.
 * The Sun is one out of billions of stars.
 * The Sun is the closest star to Earth.
 * The Sun rotates once every 27 days.
 * The Sun is now a middle-aged star, meaning it is at about the middle of its life.
 * The Sun formed over four and a half billion years ago.
 * It is a yellow dwarf star, which means it is a medium size star.

The sun is believed to be over 4 billion years old. It spins slowly on its axis as it revolves around the galaxy. The center/core, of the Sun is very hot. A process called "nuclear fusion" takes place there. Nuclear fusion produces a lot of energy, some of this energy travels out into space as heat and light, and some of it arrives at Earth. Streams of gas particles known as the solar wind also flow out from the Sun.