The sun is said to be 150 million km (93 million miles) away from the earth, but it provides us with energy bringing life on our planet. it defines the seasons, the harvests and even the sleep patterns of all living creatures in this world. The plays a very important role of an anchor which creates gravity that keeps our earth and other planets of the solar system in a small space. if sun is not there all the planets of our solar system would fly off loose in the universe.
Sun is entirely gaseous and there is no solid surface. No matter when or where we look at the sun, we will always see something interesting. Scientists are observing the changes that is happening in the sun and they concluding the information's by watching the sunspots and the sun increases and decreases on a regular cycle of 10.8 years. SOHO is the instrument that helps the NASA scientists to understand the sun better along with other satellites and large observatories on the earth. A recent theory claims that there are magnetic instabilities in the core of the sun, which may cause fluctuations with periods of either 41,000 or 100,000 years. these would give us the better explanations on the ICE AGES, on which we are very much worried about now.
How old is the Sun? PART-1
Posted by
pumerin
Tuesday, April 28, 2009
Labels: sun
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