Here is an article about it: from >National Center for science education:
Gravity: It’s Only a Theory
The Universal Theory of Gravity is often taught in schools as a fact, when in fact it is not even a good theory.
First of all,no one has measured gravity for every atom and every star. It is simply a religious belief that it is „universal“.
Secondly,school textbooks routinely make false statements. For example, „the moon goes around the earth.“ If the theory of gravity were true, it would show that the sun’s gravitational force on the moon is much stronger than the earth’s gravitational force on the moon, so the moon would go around the sun. Anybody can look up at night and see the obvious gaps in gravity theory.(…)
This is not a theory suitable for children. And even children can see how ridiculous it is to imagine that people in Australia are upside down with respect to us, as gravity theory would have it. (…)