Subject: theory of gravity is true?

On this website, the theory of gravity is disputed.
http://www.bringyou.to/apologetics/p67.htm

I think it is a parody, but I do not know how to answer the issues:

"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.  ...The existence of tides is often taken as a proof of 
gravity, ....Because if the moon's "gravity" were responsible for a
bulge underneath it, then how can anyone explain a high tide on the opposite
side of the earth at the same time?  Anyone can observe that there are 2–not
1–high tides every day.  It is far more likely that tides were given us by
an Intelligent Creator long ago and they have been with us ever since. In
any case, two high tides falsifies gravity.
 
There are numerous other flaws....if gravity were working on the early earth, 
then earth
would have been bombarded out of existence by falling asteroids, meteors,
comets, and other space junk.  Furthermore, gravity theory suggests that the
planets have been moving in orderly orbits for millions and millions of
years, which wholly contradicts the Second Law of Thermodynamics.  Since
everything in the Universe tends to disorder according to the 2nd Law,
orderly orbits are impossible.

Thank you, Emily

Re: theory of gravity is true?