The Sun (or Sol) is the star at the center of our Solar system. Earth orbits the Sun, as do many other bodies, including other planets, asteroids, meteoroids, comets and dust. Its heat and light support almost all life on Earth.
The Sun's radius is about 110 times that of the Earth.
Large solar flare recorded by the SOHO/EIT telescope using UV light from the He+ emission line at 30.4 nm. (Animation (980 kB MPEG))