Actually, it is quite easy to show the sun is not a star.
It has no star on the Hollywood Walk of Fame, has never won a Grammy, Oscar, Tony, or Emmy, has never even appeared on a talk show as a guest.
Even Rush Limbaugh has done better than that: he can eclipse the sun.
James.
"Be ye not lost amongst Precept of Order." - Book of Uterus, 1:5, "Principia Discordia, or How I Found Goddess and What I Did to Her When I Found Her."