Jet of antiparallel spin pair particles from pair anihilation in night time(abbreviated as ASPP PAiNT jet). is a novel concept for the explanation of gravity , as it hasn't been reported to me that there are any ASPP. Actually, This mechanism was adopted to me for the explanation of the junction tunneling for semiconductor and superconductor. this is third time to use same theory for the explanation of fast pair action. If Pair particles of Antiparallel spins collides, they should emit jets to accelerate satisfying the momentum conservation law.