[HN Gopher] Baked meteorites yield clues to planetary atmospheres
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       Baked meteorites yield clues to planetary atmospheres
        
       Author : Hooke
       Score  : 17 points
       Date   : 2021-04-28 15:33 UTC (7 hours ago)
        
 (HTM) web link (news.ucsc.edu)
 (TXT) w3m dump (news.ucsc.edu)
        
       | selimthegrim wrote:
       | The Murchison chondrite is older than Earth and the solar system!
       | 
       | https://news.ycombinator.com/item?id=26965241
        
       | tectonic wrote:
       | Another interesting question is whether or not water was a core
       | component of early planetary material, or delivered later by
       | comet (as assumed because it was too hot in the inner solar
       | system for volatile compounds to condense during formation).
       | There's recent evidence that both Earth [1] and Mars [2] have a
       | really large amount of water locked up underground.
       | 
       | [1] https://www.syfy.com/syfywire/was-earth-once-a-water-world
       | 
       | [2] https://science.sciencemag.org/content/372/6537/56
       | 
       | (We wrote about this in Orbital Index a few weeks back -
       | https://orbitalindex.com/archive/2021-04-07-Issue-111/ - if
       | you're into this sort of thing, you might enjoy the newsletter.)
        
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       (page generated 2021-04-28 23:02 UTC)