Friday, March 16, 2012

Moon stretches or be shattered?

LRO spacecraft has obtained Photosunusual structures on the lunar surface. They show you thatsurfacesatellites is a strong tension. Is there a possibility that it will be torn to shreds?
NASA announced that a team of scientists analyzing images taken by the spacecraft Moon Lunar Reconnaissance Orbiter found a small, narrow trench systems on the surface of the Earth's natural satellite.
The researchers speculate that these rifts that formed when the crust of the Moon was in those places stretched and torn, causing collapse and the collapse of the material along the fault. It is known that the moon was hit by a Mars-sized object on our planet about 4, 5 billion years ago. The collision broke away from the Earth's matter, which was our natural satellite. So far, however, believed that the moon formed initially totally molten rock, which then began to cool down. As a result of cooling of the interior, the moon began to shrink, and formed on its surface "wrinkles". Based on the size of these structures, scientists estimated that the distance between the "heart" of the moon, and its surface was reduced by a total of about 90 meters. found rifts, however, shed new light on the origins of Earth's satellite. Discovered depressions formed up to 50 million years ago, which means that they are relatively new structures on the lunar surface. Reach a depth of 20 meters and its width is about 500 meters.
Such formation of land did not arise as a result of contraction of the object, but its expansion. According to astronomers, this is evidence that the moon is still geologically active. What's more, initially forming it rocks were not completely melted. The presence of hard minerals in the interior led to a natural satellite of the local stretching of the crust and the formation of tectonic trenches. Previously it was expected that the moon may be expanding. If it turned out that the satellite is falling apart, the earth would be compromised.

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