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posted by janrinok on Friday February 02, @07:21AM   Printer-friendly
from the like-a-grape-not-cheese dept.

Moonquakes due to shrinkage. The moon is shrinking and by doing so is putting future moon plans in jeopardy.

[...] A new study estimates that the circumference of Earth's only natural satellite has decreased by about 45m over the past few hundred million years.

That isn't a lot of shrinkage, but apparently enough to lead to problems.

[...] ... the shrinkage causes potentially severe "moonquakes" around the lunar South Pole

[...] Right where they, NASA, want to land and build their new moon base.

[...] Its diminished outline is a result of the moon's iron core cooling and contracting over time. In much the same way as a grape wrinkles as it shrinks to become a raisin, the lunar surface

And the analogy explanation. The moon is like a grape ... not cheese. Do you know what goes with cheese? Wine. That is made from grapes. See it all ties together.

How much has earth shrunk or grown in the past few hundred million years?

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  • (Score: 2) by krishnoid on Friday February 02, @07:44PM (1 child)

    by krishnoid (1156) on Friday February 02, @07:44PM (#1342853)

    Oh, sort of like the Internet []! Or maybe a habitrail. Since you mentioned it, it made me think about how Terran tunnels manage punctuated seismic stresses. I found a tangential video from Practical Engineering for how ITER engineers its reactor [] to handle severe physical stresses, and while it doesn't cover this case explicitly, I suspect it provides some insights.

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  • (Score: 1, Interesting) by Anonymous Coward on Saturday February 03, @03:16AM

    by Anonymous Coward on Saturday February 03, @03:16AM (#1342896)

    Brings to mind the Bay Area Rapid Transit transbay tube under the San Francisco bay.

    I had already seen what a quake can do to aboveground structures and the aftermath of burning plastics in airliner fires.

    For me, every commute was a thrill ride. There are too many things I knew, and not enough assurances that an Earthquake would leave the tubes alone.

    I guess it's a moot point now, as it seems San Francisco is not to be a financial or business destination and the existence of lucrative employment which compels the risk taking no longer exists as the city morphs into a toilet.