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Oldest Alien Worlds Discovered - Born At Dawn Of Universe

Posted: 3/27/2012 3:58:25 PM   Reads: 955   Submitted By:Voyager70   Category: Space   Source: www.messagetoeagle.com
A group of European astronomers has discovered an ancient planetary system that is likely to be a survivor from one of the earliest cosmic eras, 13 billion years ago. The system consists of the star HIP 11952 and two planets, which have orbital periods of 290 and 7 days, respectively. Whereas planets usually form within clouds that include heavier chemical elements, the star HIP 11952 contains very little other than hydrogen and helium. The system promises to shed light on planet formation in the early universe – under conditions quite different from those of later planetary systems, such as our own.





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