Learn about The Sun in this educational video from dizzo95.
Read the full transcript »
Female Speaker: Five billion years from now, the sun will expand into a red hot giant, swallowing first Mercury and Venus then the Earth in its wake. It will then contract into a white dwarf, a small star that cools declining from its former power and glory. Finally, it will become a brown dwarf, a cold dense body in some remote corner of the universe. The sun's light is its life, the life of a medium sized star in the sky on whose birth, our own birth year on earth depends. The sun's most distinguishing characteristic is its proximity to us. From the dawn of history we have followed its path in the sky in a chariot of fire or that carry the gods watching in anxious wonder to see whether it would reappear above the horizon over which had vanished in evening. To light up our sky's after heavy black clouds cover them in winter, will it free itself from the preying jaws of the lunar monster that sometimes comes out to swallow it like in the middle of the day. Very slowly over the years as we overcame our fear of the dark, we opened our eyes to see that the sun shines its light on other heavenly bodies as well. Thus as we deepened our investigation, we came to understand that the sun is central the life of entire system of planets, which orbited as does the earth each according to its nature. Although, the vastness of the universe is impossible to concede, is it possible to learn from our own world about the laws that's sustain it? Can we from this cold rocky little planet stretch forth our hands to the distant reaches of the galaxy to touch the stuff of its makings? What can we learn from the color and energy of our own sun? What is the secret of its power and what is the fuel it feeds it? Will that fuel available to sustain its image forever? Only at the beginning of the 20th century, did scientistic begin to understand that the incredible power of this giant mass lies in the behavior of its tiniest particles. How do these particles produce energy in the sun's core and what are their connections to the sun's inner structure? How do these tiny particles cross the immense layers of the sun? Do they continue onwards infinitely, barring the light of the sun to the furthermost reaches of the universe?
Copyright © 2005 - 2015 Healthline Networks, Inc. All rights reserved for Healthline.