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Sources:
http://iopscience.iop.org/article/10.3847/0004-6256/151/2/22/meta;jsessionid=4958533D9BFED12639B8F5DA665CD8D5.c2.iopscience.cld.iop.org
http://arxiv.org/pdf/0902.2779v1.pdf
http://arxiv.org/pdf/1410.6307v3.pdf
http://arxiv.org/pdf/1406.0715v2.pdf
http://www.nature.com/news/dwarf-planet-stretches-solar-system-s-edge-1.14921