Phoenix science results, Beginning with December 2008 AGU meeting |
Phoenix science results, Beginning with December 2008 AGU meeting |
Dec 15 2008, 09:22 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
I figured it was time for a new thread, since we finally seem to be getting some science results out of Phoenix. The press release should be out shortly.
First numerical result I've heard was given by Peter Smith at today's press briefing at AGU: TEGA found that the soil is composed of 5% calcium carbonate, which is a significant result. Hopefully more will hit the Web soon -- post here when the links go up! --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Dec 16 2008, 11:57 PM
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
From http://planetary.org/blog/ referring to TEGA results from Phoenix:
"For example, they saw a low-temperature release of carbon dioxide (CO2). This could be a number of things: iron or magnesium carbonates; adsorbed carbon dioxide; or potentially most exciting, combusted organics." "...if there were organics present, they could have been destroyed by the perchlorate during heating before TEGA had a chance to detect them. Unfortunate --..." Why cannot the calorimeter distinguish between these possibilities? Wouldn't combusted organics be signalled by an exothermic process? Whereas the others would be endothermic, right? |
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