Pluto’s Planet Status could be Jeopardized by Sedna Discovery
http://www.space.com/scienceastronomy/s … 40317.html
Weird Object Beyond Pluto Gets Stranger
http://www.space.com/scienceastronomy/h … 40414.html
Scientists Find Another Huge Mini-World in Outer Solar System
http://www.space.com/scienceastronomy/n … 40315.html
Distant Sedna Raises Possibility of Another Earth-Sized Planet in Our Solar System
http://www.space.com/scienceastronomy/s … 40316.html
Controversial Proposal Would Boost Solar System’s Planet Tally to 12
http://www.space.com/scienceastronomy/p … 30227.html
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