Rev 61 Enceladus (March 12 2008) |
Rev 61 Enceladus (March 12 2008) |
Mar 8 2008, 10:15 PM
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#1
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Member Group: Members Posts: 544 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
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Mar 27 2008, 01:14 AM
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#2
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
You got that right, Mike. Superb work, Emily, written in such a way that even a humble artificial intelligence such as myself can understand it all!
The cometary compositional similarity is interesting. Almost begs the question of whether something unexpected (heating) happened to them rather then something funny about Enceladus. I can't see any possibility of Enceladus being a captured body. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Mar 27 2008, 07:24 AM
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#3
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
The cometary compositional similarity is interesting. Almost begs the question of whether something unexpected (heating) happened to them rather then something funny about Enceladus. I can't see any possibility of Enceladus being a captured body. Yeah, is what we're seeing between comets and Enceladus anything but ices + one-time heating to drive a little chemistry? It doesn't look to me any more remarkable than the fact that SiO2 exists in the rocks of Earth, Moon, and Mars or that N2 exists in the atmospheres of Venus, Earth, and Mars. You put the same elements together, and you usually get the same compounds. |
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Mar 27 2008, 12:04 PM
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#4
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Junior Member Group: Members Posts: 41 Joined: 11-April 07 From: London, U.K. Member No.: 1957 |
Yeah, is what we're seeing between comets and Enceladus anything but ices + one-time heating to drive a little chemistry? It doesn't look to me any more remarkable than the fact that SiO2 exists in the rocks of Earth, Moon, and Mars or that N2 exists in the atmospheres of Venus, Earth, and Mars. You put the same elements together, and you usually get the same compounds. Exactly - thankyou. My view is that the 'comet' label - whether it was meant to or not - connotes some suggestion that the organics are primordial. However, the heat flux and plume activity strongly suggest active chemical synthesis (a la Matson), which (to my feeble mind) is more astrobiologically interesting. |
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