Galileo also mapped some of the maria using spectral filters that provided information on surface composition; the results suggested that researchers could use remote spacecraft data to delineate the sequence of lava flows in the maria.

• 伽利略太空船也透过不同波长的滤光镜描画了若干月海，得到表面组成的资讯；这些结果证明，研究人员可以利用太空船遥测资料来记述月海内岩浆流的时序。