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originally posted in:City Geological Survey
Edited by yankeyhotel:
10/22/2014 2:47:20 PM
3
Caves on the moon.
Ok, so as I explore those dark caves on the Moon, I keep thinking about how they would have been created. I know the "big" caves were dug out by the Hive, ok Destiny lore that makes sense. But the smaller caves on the surface of the moon (if the Hive didn't make those) would have to have been made by water or wind erosion right? I guess what I am wondering is in real life there aren't caves like that on the Moon, or are there? I guess it would be pretty cool to explore a cave on the Moon.
Anyways, been a really long time since my geology classes in college, but I think about it every time I go into a surface cave on the moon. Thanks again
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I've actually been to the moon and there are no cave systems Just miles and miles of endless grey rock and lots of strippers
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Let me begin by saying that hopefully the CGS' esteemed leader will be able to clear a spot from his busy schedule to furnish us with an accurate answer. There is certainly some evidence to suggest there might be caves, or caverns on the moon: http://science.nasa.gov/science-news/science-at-nasa/2010/12jul_rabbithole/ http://www.nasa.gov/content/goddard/lunar-pits-could-shelter-astronauts-reveal-details-of-how-man-in-the-moon-formed/#.VEgyI_mktGY The mechanism for the formation of these features is not well understood. Erosion or weathering by liquid (water) seem unlikely. It seems the primary conjecture is impacts opening up ancient lava tubes, and exposing the voids therein. Which seems plausible, at least to a layman, such as myself. Strange things and formations do appear in space though, you need only look at the comet which the Rosetta mission is currently orbiting, and soon to send a lander to, 67P Churyumov-Gerasimenko (known as 67P, or 'Churi Guri', for obvious reasons) https://www.flickr.com/photos/europeanspaceagency/sets/72157638315605535/ Or Saturn's moon, Hyperion: http://solarsystem.nasa.gov/multimedia/display.cfm?Category=Planets&IM_ID=4143 Both have formations that seem hard to explain as a consequence of impacts alone. Even without the magic of The Traveller, Bungie have pretty much free licence it seems. The truth of our solar system is always stranger than fiction. This is why I can't wait for the upcoming missions to Ceres & Pluto amongst others. Who know what amazing stories those rocks will have to tell!
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Well the gravity seems to be the same for all places in Destiny, so I wouldn't look too deep into the science of the game. VERY little is known about erosion in space—the action of dust, gas, ions and electrons in wearing away material from exposed surfaces in interplanetary space. A cosmic-ray exposure age is obtained from the measurement of one radioactive and one stable spallation isotope produced in a meteorite by cosmic rays. A new interpretation of this age indicates that it sets an upper limit to the erosion-rate of a meteorite in space. The more obvious interpretations in terms of meteoritic break-up and planetary perturbational effects may remain valid.
