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http://www.space.com/32021-how-life-friendly-is-enceladus-ocean.html |
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http://www.space.com/32021-how-life-friendly-is-enceladus-ocean.html |
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== Some proposed change == |
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{{request edit|A}} |
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* Text to change: On June 27, 2018, scientists reported the detection of ] on Enceladus's jet plumes, as sampled by the ''Cassini'' orbiter. These indicate potential ] activity on the moon driving complex chemistry <ref name="Postberg et al. 2018"/><ref name="NASA-20180627"/>. On June 7, 2021, astronomers reported detecting substantial amounts of ], a possible sign of ], on Enceladus.<ref name="YN-20210707"/><ref name="Affholder et al. 2021/> |
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* Suggested change: The ''Cassini'' orbiter performed chemical analysis of Enceladus's plumes, finding evidence for ] activity <ref name="Waite et al. 2018"/><ref name="Hsu et al. 2015"/>, possibly driving complex chemistry<ref name="Postberg et al. 2018"/>. Ongoing research on ''Cassini'' data suggests that Enceladus's hydrothermal environment could be habitable to some of Earth's hydrothermal vents ], and that plume-found methane could be produced by such organisms <ref name="Taubner et al. 2018"/><ref name="Affholder et al. 2021"/>. |
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* Reason for change: Affholder et al. 2021 did not find large amounts in the plume (they used quantities reported in Waite et al. 2017 for their analysis) but found that this reported amount is too large to be explained by serpentinization chemistry alone. They also find that a modeled population of Earth's hydrothermal vents microbes could explain the observed methane levels. Because this research is very recent and thus subject to scientific debate, I think caution is advised (and thus the suggested "Ongoing research..."). |
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* Reference supporting change: see references in suggested change |
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* Disclaimer: I am Antonin Affholder, leading author of the 07 June study in Nature Astronomy and thus possibly subject to conflict of interest. |
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{{tref|refs= |
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<ref name="Postberg et al. 2018"> |
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{{cite journal |author=Postberg, Frank |display-authors=etal |title=Macromolecular organic compounds from the depths of Enceladus |date=June 27, 2018 |journal=] |volume=558 |issue=7711 |pages=564–568 |doi=10.1038/s41586-018-0246-4 |pmid=29950623 |pmc=6027964 |bibcode=2018Natur.558..564P }}</ref><ref>{{cite web |last1=McCartney |first1=Gretchen |last2=Brown |first2=Dwayne |last3=Wendel |first3=JoAnna |last4=Bauer |first4=Markus |title=Complex Organics Bubble up from Enceladus |url=https://www.jpl.nasa.gov/news/news.php?feature=7174 |date=June 27, 2018 |work=NASA/JPL |access-date=June 27, 2018 }}</ref> |
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<ref name="NASA-20180627"> |
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{{cite web |last1=McCartney |first1=Gretchen |last2=Brown |first2=Dwayne |last3=Wendel |first3=JoAnna |last4=Bauer |first4=Markus |title=Complex Organics Bubble up from Enceladus |url=https://www.jpl.nasa.gov/news/news.php?feature=7174 |date=June 27, 2018 |work=NASA/JPL |access-date=June 27, 2018 }}</ref> |
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<ref name="YN-20210707"> |
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{{cite news |last=Gooden |first=Tai |title=One of Saturn’s Moons Has Shown Possible Signs of Microbial Life |url=https://www.yahoo.com/lifestyle/one-saturn-moons-shown-possible-143113838.html |date=7 July 2021 |work=] |accessdate=7 July 2021 }}</ref> |
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<ref name="Affholder et al. 2021"> |
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{{cite journal |author=Affholder, Antonin |display-authors=et al. |title=Bayesian analysis of Enceladus’s plume data to assess methanogenesis |url=https://www.nature.com/articles/s41550-021-01372-6 |date=7 June 2021 |journal=] |accessdate=7 July 2021 }}</ref> |
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<ref name="Waite et al. 2018"> |
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{{cite journal|pmid=28408597|year=2017|last1=Waite|first1=J. H|title=Cassini finds molecular hydrogen in the Enceladus plume: Evidence for hydrothermal processes|journal=Science|volume=356|issue=6334|pages=155–159|last2=Glein|first2=C. R|last3=Perryman|first3=R. S|last4=Teolis|first4=B. D|last5=Magee|first5=B. A|last6=Miller|first6=G|last7=Grimes|first7=J|last8=Perry|first8=M. E|last9=Miller|first9=K. E|last10=Bouquet|first10=A|last11=Lunine|first11=J. I|last12=Brockwell|first12=T|last13=Bolton|first13=S. J|doi=10.1126/science.aai8703|bibcode=2017Sci...356..155W|doi-access=free}}</ref> |
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<ref name="Hsu et al. 2015"> |
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{{cite journal|last1=Hsu|first1=Hsiang-Wen|last2=Postberg|first2=Frank|display-authors=etal|title=Ongoing hydrothermal activities within Enceladus|journal=Nature|date=March 11, 2015|volume=519|issue=7542|pages=207–10|doi=10.1038/nature14262|bibcode=2015Natur.519..207H|pmid=25762281|s2cid=4466621}}</ref> |
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<ref name="Postberg et al. 2018"> |
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{{cite journal |author=Postberg, Frank |display-authors=etal |title=Macromolecular organic compounds from the depths of Enceladus |date=June 27, 2018 |journal=] |volume=558 |issue=7711 |pages=564–568 |doi=10.1038/s41586-018-0246-4 |pmid=29950623 |pmc=6027964 |bibcode=2018Natur.558..564P }}</ref> |
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<ref name="Taubner et al. 2018"> |
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{{Cite journal| doi = 10.1038/s41467-018-02876-y| issn = 2041-1723| volume = 9| issue = 1| pages = 748| last1 = Taubner| first1 = Ruth-Sophie| last2 = Pappenreiter| first2 = Patricia| last3 = Zwicker| first3 = Jennifer| last4 = Smrzka| first4 = Daniel| last5 = Pruckner| first5 = Christian| last6 = Kolar| first6 = Philipp| last7 = Bernacchi| first7 = Sébastien| last8 = Seifert| first8 = Arne H.| last9 = Krajete| first9 = Alexander| last10 = Bach| first10 = Wolfgang| last11 = Peckmann| first11 = Jörn| last12 = Paulik| first12 = Christian| last13 = Firneis| first13 = Maria G.| last14 = Schleper| first14 = Christa| last15 = Rittmann| first15 = Simon K.-M. R.| title = Biological methane production under putative Enceladus-like conditions| journal = Nature Communications| date = 2018-02-27}}</ref> |
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}} |
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--] (]) 12:18, 12 July 2021 (UTC) |
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:{{done}} {{reply|AAffholder}} and others - in the main article - *entirely* ok with me to rv/rm/mv/ce the edit of course - iac - Stay Safe and Healthy !! - ] (]) 14:37, 12 July 2021 (UTC) |
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==Conflict with article on the Forty-Foot Telescope== |
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==Conflict with article on the Forty-Foot Telescope== |
The data gathered by Cassini in her final flybys in October (E21) and December 2015 (E22) are expected to yield some clues regarding the chemistry of the moon's ocean and prospects for some form of biochemistry. The data may not be published until December 2016, it seems....
One other point that I noticed is that this article states: "The name, like the names of each of the first seven satellites of Saturn to be discovered, was suggested by William Herschel's son John Herschel in his 1847 publication Results of Astronomical Observations made at the Cape of Good Hope" Does that mean that Enceladus did not have a name for the first 50+ years after it was discovered, and wasn't named until 27 years after William Herschel's death? Or did John Herschel suggest the names earlier, and then recounted the origins in his 1847 book? I wasn't clear which was meant? Could this be clarified? Again, I don't know anything about the topic, so don't want to make any changes myself. Mr Serjeant Buzfuz (talk) 01:54, 28 August 2021 (UTC)
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