Dwarf Planets
by Nick E
what are they
dwarf planets are planets that are too small to be planets. They are made up of rock and gas and they have a moon or two.
where are they
most dwarf planets are past the orbit of neptune on kuiper's belt. we have over 200 dwarf planets alone
what makes them dwarf planets
the planets is so small they can not clear other objects out of the way.
sources
http://www.nasa.gov/audience/forstudents/k-4/stories/what-is-pluto-k4.html#.VGIj9zCJOuY
Neptune,comets and dwarf planets p41-p52