A sphere of light; esp., the luminous envelope of the sun.
Region of space lit by the sun
Sun's luminous envelope.
Visible surface of the Sun, which emits light and heat. About 300 km/200 mi deep, it consists of incandescent gas at a temperature of 5,800K (5,530şC/9,980şF).
Rising cells of hot gas produce a mottling of the photosphere known as granulation, each granule being about 1,000 km/620 mi in diameter. The photosphere is often marked by large, dark patches called sunspots. + prikaži više