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Publisher's Summary

William F. Welsh, a professor of astronomy at San Diego State University, and Laurance R. Doyle, an astrophysicist at the SETI Institute in Mountain View, California, write about how astronomers are discovering distant planets that orbit two-star systems, uncovering bizarre and wondrous worlds unlike anything in our solar system.
This article was published in the November 2013 edition of Scientific American.
©2013 Scientific American
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