http://www.brainpop.com/science/space/pluto/
http://planetfacts.org/
http://nineplanets.org/pluto.html
http://www.nasa.gov/worldbook/index.html
http://learn.arc.nasa.gov/planets/1/index.html
http://solarsystem.nasa.gov/index.cfm
http://pds.jpl.nasa.gov/planets/welcome.htm
http://planetfacts.org/
http://nineplanets.org/pluto.html
http://www.nasa.gov/worldbook/index.html
http://learn.arc.nasa.gov/planets/1/index.html
http://solarsystem.nasa.gov/index.cfm
http://pds.jpl.nasa.gov/planets/welcome.htm