Did you grow up thinking there were nine planets in the solar system? You might have been right all along! Today we discuss the possibility of distant worlds in our solar system.

Large Scale Synoptic Survey Telescope Image Courtesy of http://www.lsst.org/lsst/

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Sources:
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/dwarfplan...
https://www.sciencenews.org/article/d...
http://www.newscientist.com/article/d...
http://www.newscientist.com/article/d...
http://www.npr.org/2015/02/02/3822760...