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Text and/or other creative content from this version of Astrobiology was copied or moved into Life sciences with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Hello Drbogdan. Yes, I have been thinking of adding a section on forward contamination & back contamination as you mention above, but the information is so scant we may have to do with a few paragraphs only. For certain, there are protocols in place for inter-planetary spacecraft sterility, and regarding back-contamination, what is there besides Moon samples and Apollo astronaut quarantine? Share your thoughts and lets see how this develops. Cheers, BatteryIncluded ( talk) 02:45, 18 March 2011 (UTC)
IMPORTANT FOLLOWUP - By Coincidence - Seems Some Of The Material We Were Seeking Was Already Written-Up As A Wikipedia Article - But "Deleted" In February, 2011 (?) (Also See -> Related Link) - Fortunately, The Article Has Survived And Can Be Viewed As Directed Panspermia (draft) - My Own Preliminary Comments On This Material Were Posted As Follows:
Copied From
Talk:Panspermia#Separate_Article_on_Directed_Panspermia
FWIW - At First Glance, And At The Moment, The Material In The Proposed Article On "Directed Panspermia" Seems To Be A *Really, Really* Excellent Academic Effort - A Worthy Contribution To Wikipedia - And - Sufficiently Substantial To Be A *Separate* Article From The Main Article On Panspermia - After All, The Present Panspermia Article Seems To Be More About "In-Coming" [to planet Earth] Whereas " Directed Panspermia" Seems To Be More About "Out-Going" [from planet Earth] Instead - A *Very* Important (seemingly neglected?) Consideration In My Opinion At The Moment - Also, The Minimal Mention Of " Panspermia#Directed_panspermia" In The Present Main Panspermia Article Does *Not* Seem Sufficient For This Very Important Topic In My Opinion - That Said - In Some Ways, The Material In The Newly Proposed" Directed Panspermia" Article Seems Similar In Basic Notions (in a much more extensive way of course) To The (less extensive?) Material In The Present Forward-contamination Article - Perhaps The Two Articles Could Be Combined In Some Way? - Perhaps The " Directed Panspermia" Article Could Be Edited Into The Present Forward-contamination Article - Or - The Material In The Forward-contamination Article Could Be Merged Into A Newly Created " Directed Panspermia" (or related title) Article - In Any Case - Enjoy! :) Drbogdan( talk) 18:20, 5 September 2011 (UTC)
Any Comments On This Material, And The Way This Material Can Be Best Incorporated Into Wikipedia, Would Be Greatly Appreciated - Enjoy! :) Drbogdan ( talk) 13:19, 6 September 2011 (UTC)
This concept of this article is ok in my opinion HOWEVER the issue I have with it is that it makes a giant conceptual leap. On one hand it is talking about the scientific study of the basic ingredients for life and the next it is talking about attempts to communicate with intelligent civilizations. There is absolutely no link in between. Is SETI really astrobiology ? Evolvability of extraterrestrial life is not only assumed in this section, but stretched to its limits all the way to non-human intelligence which is not very encyclopedic and far too Earth-centric for my liking. -- EvenGreenerFish ( talk) 05:37, 15 November 2011 (UTC)
Not sure if this discovery can be used here: [1] - BatteryIncluded ( talk) 03:51, 30 August 2012 (UTC)
The Astrobiology Portal is now under construction and will need continued user support and contributions. Please help out! You can either edit the portal directly (see link at bottom of article) or improving upon pages in the scope of astrobiology (such as this one) that will later be featured on the portal. Thank you!-- Jacob.husted ( talk) 18:15, 28 September 2012 (UTC)
Here is a candid critique to that paper, [3] specially charging that the authors cherry-picked their data to reach the desired conclusion (life is older than Earth → validating panspermia.) I agree that the paper premise (hypothesis) is fringe and perhaps not worth of such exposure -at least not in the introduction of this article. What say you? CHeers, BatteryIncluded ( talk) 22:33, 21 April 2013 (UTC)
UPDATE: Moved old text from the lede and added newer text/refs (including updated arXiv ref) to Astrobiology#Biology section instead as follows:
Astrobiology#Biology section addition:
... NIH scientists reported studies that life began 9.7±2.5 billion years ago, billions of years before the Earth was formed, based on "extrapolation of the genetic complexity of organisms to earlier times".< ref name="arXiv-20130328">Sharov, Alexei A.; Gordon, Richard (28 March 2013). "Life Before Earth" (PDF). arXiv. arXiv: 1304.3381v1. Retrieved 16 April 2013.</ref>< ref name="NIH-20060612">Sharov, Alexei A. (12 June 2006). "Genome increase as a clock for the origin and evolution of life". Biology Direct. 1: 1–17. doi: 10.1186/1745-6150-1-17. PMC 1526419.{{ cite journal}}
: CS1 maint: unflagged free DOI ( link)</ref> (also see Abiogenesis#Coenzyme world)
should now be ok but *entirely* ok to rv/mv/ce of course - in any case - Enjoy! :) Drbogdan ( talk) 03:04, 22 April 2013 (UTC)
Xenobiology redirects here on the assumption that it refers to its older meaning that is roughly synonymous with "astrobiology". However, there has arisen a new meaning of the term "xenobiology" that refers to the creation of synthetic life analogues like Xeno Nucleic Acid that seems like it would warrant an article independent of astrobiology. I'm not sure the best way to solve this, but it seems to me like it would include making xenobiology a disambiguation page. Thoughts? — Gordon P. Hemsley→ ✉ 16:14, 18 May 2013 (UTC)
Biology and chemistry, as opposed to physics, do not admit ideological contexts: either the biological phenomena are real, or they are abstract.[dubious – discuss] Biologists cannot say that a process or phenomenon, by being mathematically possible, have to exist forcibly in the real nature. For biologists, the ground of speculations is well noticeable, and biologists specify what is speculative and what is not.
This is the introductory paragraph of the Biology section. It has numerous problems:
I'm deleting it. Moxfyre ( ǝɹʎℲxoɯ | contrib) 05:52, 26 May 2014 (UTC)
NASA-TV (07/14/2014@2:00-3:30pm/et/usa) - Panel of leading experts to discuss plans leading to the "discovery of potentially habitable worlds among the stars" [1] - Enjoy! :) Drbogdan ( talk) 17:23, 11 July 2014 (UTC)
FOLLOWUP - NASA VIDEO REPLAY - Space Experts Discuss the " Search for Life in the Universe" (86:49) at => http://www.youtube.com/watch?v=GNjuz6MO0eU - Enjoy! :) Drbogdan ( talk) 12:41, 15 July 2014 (UTC)
FWIW - NASA-TV (08/20/2014@5:30-6:30pm/et/usa) - Panel of experts discuss ancient Earth and Habitable Exoplanets [1] - Enjoy! :) Drbogdan ( talk) 15:05, 20 August 2014 (UTC)
Of possible interest --
In any case - Enjoy! :) Drbogdan ( talk) 14:09, 11 February 2015 (UTC)
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I'm not sure how hot a topic this is among microbiologists/biochemists, but I was wondering how plausible is it that there are Methane producing microbes on Titan? We know that there are lakes of Methane on Titan, but do we know of any mechanisms through which it can be metabolized by any microorganisms? It's a high fuel hydrocarbon that provides energy upon combustion, so could there be microorganisms that can use it as a carbon source or as a fuel source? There are theories of how the building blocks of life's origins could have been jettisoned from Mars when an asteroid hit it some 10 billions of years ago, so life could have very well began outside of earth. There are microorganisms already that have been shown to be able to survive space's intense radiation, so could these species have come from another place other than earth that intense raditation is so common that it allowed for radiation-resistant organisms to evolve? — Preceding unsigned comment added by Leerich3 ( talk • contribs) 02:49, 19 September 2016 (UTC)
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There is an article at AfD that may interest you. The article is here Modern Mars habitability. Please vote or comment at WP:Articles for deletion/Modern Mars habitability
Robert Walker ( talk) 03:26, 18 August 2018 (UTC)
There is an article listed at 'Articles for Deletion' (AfD) that may interest you. The article is International Committee Against Mars Sample Return. Please comment at Wikipedia:Articles for deletion/International Committee Against Mars Sample Return.
Cheers, Rowan Forest ( talk) 15:37, 22 August 2018 (UTC)
The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion:
Participate in the deletion discussion at the nomination page. — Community Tech bot ( talk) 06:08, 19 July 2020 (UTC)
FWIW - (For being aware only of newly published relevant studies - not necessarily to incorporate into the main article) - On 8 July 2022, astronomers reported the discovery of massive amounts of prebiotic molecules, including for RNA, in the galactic center of the Milky Way Galaxy. [1] [2] - Stay Safe and Healthy !! - Drbogdan ( talk) 13:04, 10 July 2022 (UTC)
References
{{
cite journal}}
: CS1 maint: unflagged free DOI (
link)
Drbogdan ( talk) 13:04, 10 July 2022 (UTC)
The redirect Discover extraterrestrial life has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Readers of this page are welcome to comment on this redirect at Wikipedia:Redirects for discussion/Log/2023 June 17 § Discover extraterrestrial life until a consensus is reached. Headbomb { t · c · p · b} 23:49, 17 June 2023 (UTC)
The current first sentence is:
I think this reads a little oddly, in ways not obviously supported by the given reference. I don't think you need to be a philosophical determinist to be an astrobiologist, do you? Or is this supposed to be an enumeration of two concerns, one being deterministic/necessitarian and the other being indeterministic/contingent? Maybe the language could be simplified and some of the philosophical baggage removed, along the lines of ...investigating the conditions for its emergence and its subsequent development or some such? -- Trovatore ( talk) 21:36, 11 September 2023 (UTC)