20-10-2016 19:24 via scitechdaily.com

Discovery of First Binary-Binary Questions What We Know About the Solar System

Binary system HD 87646 raises new questions about how protoplanetary disks form. Everything we know about the formation of solar systems might be wrong, says University of Florida astronomy professor Jian Ge and his postdoc, Bo Ma. They’ve discovered the first “binary–binary” – two massive companions around one star in a close binary system, one […]
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