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Two stars, each with the same mass and in orbit around each other, are twins that one would expect to be identical. So astronomers were surprised when they discovered that twin stars in the Orion Nebula, a well-known stellar nursery 1,500 light years away, were not identical at all. In fact, these stars exhibited significant differences in brightness, surface temperature and possibly even size.The study, which is published in the June 19 issue of the journal Nature, suggests ... More at http://www.nsf.gov/news/news_summ.jsp?cntn_id=111724&govDel=USNSF_51 This is an NSF News item.
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