polar region,antarctic ocean

a radar image of mercury's north polar region acquired
【摄影:华丽的极光】极光(polar light,aurora)是由于太阳带电粒子
【摄影:华丽的极光】极光(polar light,aurora)是由于太阳带电粒子
vector magnetic fields of a solar polar region
极光(aurora,aurora borealis,polar light或northern light)