Image: http://www.solar views.com/eng/sun.htm
There are layers to the surface of the sun. The first is the Photosphere. This is lowest part of the outside shell of the sun.
This is the part of the Sun that people on Earth normally see when they stare up at the sun.
The pressure here is actually less than that of Earth. Being about 1/10 that of Earth's atmosphere.
The photosphere is also very thin. Being only 500km thick.
Image: http://science.nasa.gov/ssl/pad/solar/chromos.htm
The next layer up from the Photosphere is the Chromosphere. This is a sphere that can only be seen with a telescope that uses filters,
a spectrometer or during a full solar eclipse. During the eclipse the red out flaring of light or prominences is actually the visible part
or the chromosphere. Also the temperature of the Chromosphere is hotter than that of the Photosphere. The temp is about 20,000* C where
the Photosphere is about 6000* C.
Intro / What is the Sun / Sun Stats / Sun Parts 1 / Sun Parts 2 / Sun Parts 3 / View of the Sun / End of the Sun / Bibliography
Background Image : http://hubblesite.org/newscenter/newsdesk/archive/releases/2004/07/