Take the tour ×  Confinement of antihydrogen might help provide
a future answer. http://arxiv.org/abs/1104.4982  share|improve
this question Anti-hydrogen is also discussed here
physics.stackexchange.com/q/1190/2451 –  Qmechanic May 2 '11 at
14:11 Also see this article: arxiv.org/abs/0909.3456 –  Jerry
Schirmer Sep 1 '11 at 14:03 at least what i can comment is that
gravity is strange in itself....Being lowest to such an extent
that m-theory researchers say that it is actually escaping from
our universe! –  Vineet Menon Sep 2 '11 at 10:07 add comment  3
Answers  up vote 0 down vote accepted  You're of course right.
Experimentally established, known laws of physics - especially
the equivalence principle - are enough to be certain that
antimatter has the same gravitational properties - including
universal attraction - as ordinary matter.   The justification
of further experiments by "tests of antimatter's gravity" is
partly based on ignorance and partly on deliberate deception to
get funding.  share|improve this