sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies..
8u cc suncity888 Learn about the Sun, our closest star and the source of light and heat for life on Earth. Find out how the Sun looks, how it works, and how it affects our solar system.
sunwin newmilfordrecycling.com The sun keeps the planets in its orbit with a tremendous gravitational force. What would happen if it disappeared entirely? Learn about the star at the center of our solar system, and how it is ...