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Sun The Sun is the center of the solar system. This is the biggest element of this group of objects. This is also the only one that is lighting in this system. Without it, life wouldn't exist. Photosynthesis couldn't occur, so plantsz couldn't appear, and hence this other life forms couldn't appear neither. Each second, the sun transmuts 600 millions tons of hydrogen and transforms 4,5 million tons of hydrogen in energy. Its life, calculated from this consumtion of energy and from its size gives a probability of 333 * 10 exp(15) seconds, that is to say 10,6 billion years. See solar wind, astronomical unit  |
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