Sol is a star in the Milky Way galaxy. It is orange in color, and its surface temperature is 5,778°K. It is approximately 4.6 billion years old, and is expected to die in about 5 billion years. Its planetary system contains 8 planets: Mercury, Venus, Earth (life containing), Mars (life supporting), Jupiter, Saturn, Uranus, and Neptune. Along with this, its planetary system also contains many dwarf planets, notable ones being Pluto, Ceres, Eris, Haumea and Makemake.