Pluto is not a planet for several reasons. 1: it's too small. Smaller than our own moon in fact. 2: Pluto along with another dwarf planet revolve around each other as they revolve around the sun. If you want to be a planet you can't revolve around another planet. I believe there is one more reason but it eludes me at the moment. And the website is nasa.gov. You can't have a fake .gov website