Drastic chemical change occurring in birth of planetary system: Has the solar system also experienced it?

A new star is formed by gravitational contraction of an interstellar molecular cloud consisting of gas and dust. In the course of this process, a gas disk (protoplanetary disk), whose size is on the order of 100 AU, forms around the protostar and evolves into a planetary system. The Solar System was also formed in this way about 4.6 billion years ago, and life was eventually born on the Earth. How unique in the Universe is the situation which happened for the Solar System? In order to answer this question, understanding the formation of protoplanetary disks as well as the …read more

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/xnR5PO4oiLw/140213083720.htm

    

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