http://time.com/7809/1-in-4-americans-thinks-sun-orbits-earth/
No joke. 1/4 of Americans believe the Sun revolves around the Earth.
Also, it states that Europeans actually scored WORSE on that question, so it's not really a problem isolated in 'merica.
http://news.discovery.com/space/astronomy/1-in-4-americans-dont-know-earth-orbits-the-sun-yes-really-140214.htm
Here it also states that about halfway Americans believe Astrology is bunk science. No really. Guys, take your tin foil hats off. Please.