Working in a Science center you hear all sorts of mis conceptions and mis information.
I present planetarium shows and have had my fiar share of creationists moaning at me about telling their children that we are made of star dust and that the Earth is billions of years old.
One woman was surprised to discover that stars were Suns. She thought they were reflections from the Sun.
Another woman didn't know that everything was made of molecules.
The amount of ignorance is astounding.