A mix of views on Pluto and its non-planet status. Astronomers Mike Merrifield and Meghan Gray, and office mate Tony Padilla who is a particle physicist and bit of a stirrer! Pluto and Plutonium: https://www.youtube.com/watch?v=498pOIm8Qbc Our first Pluto video: https://www.youtube.com/watch?v=cqI261zNsCc Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran