Report an inappropriate comment Planet Vs. Star Wed Oct 15
16:34:00 BST 2008 by Anonymous Actually, size isn't as
significant. When they redefined planetary objects (i.e. When
Pluto became a dwarf planet, instead of a planet), had to do
with the body of mass have a clear orbit, void of interstellar
debris. The body can be massive, and still not make it a star (a
fusion reactor of sorts).