Gịnị bụ ajụjụ maka: "Mercury nwere ikuku na-adịghị ike na nke na-agbanwe agbanwe (elu-elu exosphere) nwere hydrogen, helium, oxygen, sodium, calcium, potassium na mmiri mmiri, na ọkwa nrụgide jikọtara nke ihe dịka 10−14 bar (1 nPa )."? Isiokwu a bụ Ọnọdụ nke Mercury.
"Olee otú ikuku dị na Mercury?"