Talk:Life on Titan

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Why is this here? It's just a copy of information already in the Titan article. Serendipodous 07:11, 26 October 2010 (UTC)

Here are four reasons...

1. Because the topic is notable in its own right. It is something both scientists and the public are talking about.

2. Because the main Titan article is getting seriously long. If a WP reader wants to know specifically about the question of life on Titan, should they have to scroll through all the other aspects to find what they want?

3. I had extra information to add, e.g. about the (now obsolete but historically interesting) hypothesis which expected Titan's surface to be almost as warm as Earth's, about the recent hypothesis of phosphane as a solvent for life, about how the June 2010 findings were reported in the UK Telegraph. Adding these points to the main Titan article would have made an already long article even longer. See Wikipedia:Article size

4. WP policy on Wikipedia:Abundance and redundancy states: "there is no bandwidth need to exclude material on the basis of its redundancy across articles. Ease of reading is facilitated by the inclusion of relevant material, rather than disinclusion." Kalidasa 777 (talk) 01:46, 28 October 2010 (UTC)

Good job with the expanding. I'm cool now. Serendipodous 06:18, 29 October 2010 (UTC)

Findings suggesting surface life[edit]

Translations please? To me, it appears that we are saying that:

If there are methanogenic life-forms at the surface that are consuming hydrogen and acetylene, then these chemicals would be less abundant at the surface. And it looks like that is what is happening: hydrogen and acetylene are more abundant in the upper atmosphere than they are at the surface. This could be an indicator of life on Titan.

How is that? Kortoso (talk) 23:36, 12 December 2013 (UTC)

It's not a case of what we are saying, but of what has been said by planetary scientists such as Darrell Strobel and Chris McKay on the basis of data from the Cassini-Huygens mission. I'm not quite sure which part of the argument requires "translations" -- would you like to explain? One point made by Strobel is that given there is abundant hydrogen high in the atmosphere, but much less near the surface, the physics of diffusion result in a downward flow of hydrogen molecules, thus the levels of hydrogen near the surface and higher up would tend to equalize... unless some process near the surface is actively reducing the concentration of hydrogen. Kalidasa 777 (talk) 03:45, 14 December 2013 (UTC)
"Translation" = "explanation in non-technical language". Kortoso (talk) 18:12, 16 December 2013 (UTC)
I've just expanded and reworded the bit about Strobel's argument. Hope it is clearer now... Kalidasa 777 (talk) 23:17, 20 December 2013 (UTC)
Much better now, thanks! Kortoso (talk) 00:34, 22 January 2014 (UTC)
Just found this recently: Methanotroph - could be at the other end of a putative Titan food chain. Kortoso (talk) 01:11, 22 January 2014 (UTC)
I'm not saying you're wrong. It's quite conceivable that Titan has organisms which consume methane, although the chemistry and thermodynamics would be different from here because Titan has fewer oxidizing molecules. But we can't talk about possible Titan methanotrophs in the article unless we can find discussion about them in existing published literature as per WP:Verifiability policy and WP:Reliable Source guidelines. Kalidasa 777 (talk) 23:27, 22 January 2014 (UTC)
Yes, of course I wasn't considering putting it into the article. Very interesting nonetheless, and thank you for the details. Kortoso (talk) 00:06, 23 January 2014 (UTC)
Yes, Titan is not only very interesting in itself, it also stimulates our interest in the different forms of life on Earth. Glad the details I mentioned are relevant to you. Thank you very much for all your feedback.Kalidasa 777 (talk) 21:51, 23 January 2014 (UTC)