As of 1999, and again in 2005, surveys indicated that 1 in 5 American Adults believe the sun orbits the earth. From the Gallup poll:
As far as you know, does the earth revolve around the sun, or does the sun revolve around the earth?
Earth revolves around the sun 79%
Sun revolves around the earth 18%
No opinion 3%
Like I said - it explains so very much.
Afterthought: Who has "no opinion" about a binary statement of fact?