On the Moon’s orbit sixth year running satellite NASA LRO. Thanks to its high-resolution cameras, scientists have access to almost the entire surface in high detail. A study of the images has led to a curious discovery: The moon cools and, as a consequence, is reduced in size. As a result, the internal volume of the compression, the moon’s surface is covered by a network of fine cracks.
But that is not all. If a compressed spherical moon in a vacuum, without the involvement of outside forces, the direction of the cracks would be unstructured and chaotic. However, the real moon formation of cracks subject to external influence, namely tidal compression, which arises from the Earth’s gravity. Cracks on the Moon formed almost in the directions of lines of geographical meridians. Read the rest of this entry »