Mepụta ụdị nke ahịrịokwu a dị mgbagwoju anya Gravity Probe A (GP-A) bụ nnwale nke na-adabere na mbara igwe na ụkpụrụ nhata nke Einstein's theory of relativity.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Gravity Probe A (GP - A) bụ nnwale nke dabeere na mbara igwe iji nwalee echiche nke ịdị nso n'ozuzu ya, nke Smithsonian Astrophysical Observatory na National Aeronautics and Space Administration jikọrọ aka mee".