Science. 1994 May 20;264(5162):1112-5. doi: 10.1126/science.264.5162.1112.
Multispectral images obtained during the Galileo probe's second encounter with the moon reveal the compositional nature of the north polar regions and the northeastern limb. Mare deposits in these regions are found to be primarily low to medium titanium lavas and, as on the western limb, show only slight spectral heterogeneity. The northern light plains are found to have the spectral characteristics of highlands materials, show little evidence for the presence of cryptomaria, and were most likely emplaced by impact processes regardless of their age.
伽利略号探测器第二次飞越月球时获得的多光谱图像揭示了北极地区和东北月面的成分特征。这些区域的月海沉积物主要是低到中钛熔岩，与西月面一样，显示出很小的光谱异质性。北亮平原具有高地物质的光谱特征，很少有隐马里亚存在的证据，而且无论其年龄如何，很可能都是撞击过程形成的。
