Small Planets don't need Stars with heavy metal content to form
16 Jun 2012, 06:24 UTC
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Source: NASA Kepler Artist's impression of planet formation. Image credits: Credit: University of Copenhagen/Lars Buchhave . The formation of small worlds like Earth previously was thought to occur mostly around stars rich in heavy elements such as iron and silicon. However, new ground-based observations, combined with data collected by NASA's Kepler space telescope, shows small [...]
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