Blayne Chang Yudai Fukuda

15,000,000 °C (27,000,000 °F). Outer visible layer is called the photosphere and has a temperature of 6,000°C (11,000°F).

Mass (kg)1.989e+30 864,938 miles (1,391,980 km). 109 times as big as the Earth. The volume is 1,299,400 times bigger than the volume of the Earth.

160 g/cm^3 15 million kelvins (27 million °F) keeps it in a gaseous state.

Fusion reactions produce energy in the form of gamma rays and neutrinos

The gamma rays are absorbed and re-emitted by many atoms on their journey from the envelope to the outside of the sun.

When the gamma rays leave atoms, their average energy is reduced.

The layer of the Sun above the core in which energy transfer begins through radiation

It takes hundreds of thousands of years for the particles to get through.

The layer of the Sun above the radiative zone in which energy transfer continues through convection.

The area forms the outer shell of the Sun.

Process creating convection currents and the visual effect of boiling on the Sun's surface. Granulation.

2000-3000 km thick. Glows faintly relative to the photosphere.

Can only be seen easily in a total solar eclipse.

Reddish in color the origin of its name

chromos meaning ``color’’

The extended outer atmosphere of the Sun.

A temperature of millions of degrees.

10 billion times less dense than the atmosphere of the Earth at sea level.

Very thin and faint. very difficult to observe from the earth.

Video

http://www.youtube.com/watch?v=CxKYjo6TxAs

Elkins-Tanton, Linda T. "Sun." Science Online. Facts On File, Inc. Web. 18 Jan. 2011. <http://www.fofweb.com/activelink2.asp?ItemID=WE40&SID=5&iPin=SSMV0002&SingleRecord=True>.

Daintith, John, and William Gould. "Sun." Science Online. Facts On File, Inc. Web. 18 Jan. 2011. <http://www.fofweb.com/activelink2.asp?ItemID=WE40&SID=5&iPin=DAFE2338&SingleRecord=True>.

Kusky, Timothy. "Sun." Science Online. Facts On File, Inc. Web. 18 Jan. 2011. <http://www.fofweb.com/activelink2.asp?ItemID=WE40&SID=5&iPin=EESS0232&SingleRecord=True>.