Maria Zuber weMassachusetts Institute of Technology ndiye muongorori mukuru weGRAIL. NASA's Jet Propulsion Laboratory inotarisira chirongwa ichi. Kubva musi wa5 Nyamavhuvhu 2011, chirongwa ichi chakatora US $ 496 mamirioni. Pakutanga, ngarava yemuchadenga yakatumidzwa zita rekuti GRAIL A uye GRAIL B uye makwikwi akavhurwa kuvana vechikoro kuti vasarudze mazita. Anenge makirasi mazana mapfumbamwe kubva kumatunhu makumi mana nemashanu, Puerto Rico neDistrict yeColumbia, vakapinda mumakwikwi. Mazita anokunda, Ebb uye Flow, akakurudzirwa nevadzidzi vegiredhi rechina paEmily Dickinson Elementary School muBozeman, Montana. Chimwe nechimwe chemuchadenga chakatumira uye chakagamuchira telemetry kubva kune chimwe chemuchadenga uye zvivakwa zvePasi. Nekuyera shanduko iri pakati penzvimbo mbiri, nzvimbo yegiravhiti uye chimiro cheMwedzi chakakwanisa.
Jet Propulsion Laboratory yeNASA