We all know that the sun is the most prominent feature in our solar system. It is the largest object and contains approximately 98% of the solar system mass. One hundred and nine Earths would be required to fit across the sun's disk, and its interior could hold over 1.3 million Earths. The sun's outer visible layer is called the photosphere and has the temperature of 6,000 degree Celsius. This layer has a mottled appearance due to the turbulent eruptions of energy at the surface.
Principle chemistry
hydrogen 92.1%
helium 7.8%
oxygen 0.061%
carbon 0.030%
nitrogen 0.0084%
neon 0.0076%
iron 0.0037%
silicon 0.0031%
magnesium 0.0024%
sulfur 0.0015%
all others 0.0015%
The chromosphere is above the photosphere. Solar energy passes through this region on its way out from the center of the sun. Faculae and flares arise in the chromosphere. Faculae are bright-luminous hydrogen clouds which form above regions, where sunspots are about to form. Flares are bright filaments of hot gas emerging from sunspot regions. sunspots are the rare depressions on the photosphere with a typical temperature of 4,000 degree Celsius.
The corona is the outer part of the sun's atmosphere. It is in this region that prominences appears.Prominences are immense of clouds glowing gas that erupt from the upper chromosphere. The outer region of the corona stretches far into the space and consists of particles traveling slowly away from the sun. The corona can be only seen during solar eclipses.
Sun - PART- 2
Posted by
pumerin
Saturday, May 2, 2009
Labels: sun
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