1 in 12 Stars May Have Eaten a Planet, Cosmic 'Twin Study' Finds

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1 in 12 Stars May Have Eaten a Planet, Cosmic 'Twin Study' Finds
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How stable are planetary systems? Will Earth and its seven siblings always continue in their steady celestial paths, or might we one day be randomly ejected from our cosmic home?

This approach can eliminate confounding factors, in the same way that studies of twins are sometimes used in sociological or medical research.Our team collected an exquisite sample of spectroscopic data from 91 pairs of twin stars – many times larger than similar studies conducted in the past. This suggests the chemical anomalies we saw were caused by more recent instabilities, causing the stars to consume some planets or planetary material.

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