The Sun's Possible Long-Lost Twin

There's a strange sphere of mass at the outer reaches of solar space. Did another star help put it there? Read Live Science writer Rafi Letzter's #astrophysics story on it here: https://www.livescience.com/planet-9-sun-twin.html


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For the science geek in everyone, LiveScience.com breaks down the stories behind the most interesting news and photos on the Internet, while also digging up fascinating discoveries that hit on a broad range of fields, from dinosaurs and archaeology to wacky physics and astronomy to health and human behavior. If you want to learn something interesting every day, #LiveScience is the place for you.