Gravitational interaction of antimatter

The gravitational interaction of antimatter with matter or antimatter has not been conclusively observed by physicists. While the overwhelming consensus among physicists is that antimatter will attract both matter and antimatter at the same rate that matter attracts matter (and antimatter), there is a strong desire to confirm this experimentally, given that consensus in science is but hypothesis open to falsification.

Antimatter's rarity and tendency to annihilate when brought into contact with matter makes its study a technically demanding task. Most methods for the creation of antimatter (specifically antihydrogen) result in high energy atoms unsuitable for gravity-related study. In recent years, the ATHENA and ATRAP consortia have successfully created low-energy antihydrogen, but observations have thus far been methodically limited to annihilation events that yield little-to-no gravitational data.

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