- Mysterious Gravitational Tug on Saturn May Help Find Planet Nine http://www.scientificamerican.com/article/mysterious-gravitational-tug-on-saturn-may-help-find-planet-nine/ 12 comments worldnews
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- Strong Evidence Suggests a Super Earth Lies beyond Pluto - Scientific American http://www.scientificamerican.com/article/strong-evidence-suggests-a-super-earth-lies-beyond-pluto1/ 10 comments
- Hidden "Planet X" Could Orbit in Outer Solar System - Scientific American http://www.scientificamerican.com/article/hidden-planet-x-could-orbit-in-outer-solar-system/ 5 comments
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