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[RT] Violent, head-to-head crash between Earth and another planet created the moon - Page 8

post #71 of 72
^ i'll go with what NASA infers:

http://www.nasa.gov/exploration/home/15mar_moonquakes_prt.htm
Quote:
Furthermore, shallow moonquakes lasted a remarkably long time. Once they got going, all continued more than 10 minutes. "The moon was ringing like a bell," Neal says.

On Earth, vibrations from quakes usually die away in only half a minute. The reason has to do with chemical weathering, Neal explains: "Water weakens stone, expanding the structure of different minerals. When energy propagates across such a compressible structure, it acts like a foam sponge--it deadens the vibrations." Even the biggest earthquakes stop shaking in less than 2 minutes.

The moon, however, is dry, cool and mostly rigid, like a chunk of stone or iron. So moonquakes set it vibrating like a tuning fork. Even if a moonquake isn't intense, "it just keeps going and going," Neal says. And for a lunar habitat, that persistence could be more significant than a moonquake's magnitude.
i posted this before but i guess since i replied to a delete post . . i'll admit to being a little disappointed if there isn't a some latitude given in this discussion.
loon 3.2
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loon 3.2
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post #72 of 72
Quote:
Originally Posted by Tsumi View Post

Well, it could also be one planet rear-ending the other at sufficiently high speeds. Or a T-bone.

My point exactly.
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Overclock.net › Forums › Industry News › Technology and Science News › [RT] Violent, head-to-head crash between Earth and another planet created the moon