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 Post subject: Mysterious Titan
PostPosted: Sat Sep 24, 2016 10:35 am 
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Unexplained Ice Cloud Suddenly Appears Over Saturn’s Moon

http://mysteriousuniverse.org/2016/09/u ... urns-moon/

Quote:
Clouds have been previously spotted in Titan’s stratosphere, after having formed at Titan’s poles due to regularly-occurring pressure and temperature circulation patterns. This new cloud, however, does not follow previously-recorded models of cloud formation. What’s more surprising is the fact that the cloud is made up of carbon subnitrate, also known by its chemical name, dicyanoacetylene (C4N2). Clouds of such molecules usually only form through a process known as solid-state photochemistry, in which reactions between photons from the Sun and organic compounds within ice can spontaneously create new compounds.


Image

and...

Life "not as we know it" might be possible on Titan

http://www.sciencealert.com/life-on-tit ... iliar-with

Quote:
So the question becomes: what if life can work differently on other worlds, specifically Titan?

To find out, the team created a hypothetical cell membrane that they called an 'azotosome' after the French word "azote", meaning nitrogen.

This azotosome consists of nitrogen, carbon, and hydrogen molecules, which the team says can commonly be found in the colder regions of Titan. This membrane was nothing like the ones we have here on Earth, but it showed the same stability and flexibility as our liposomes.

After running tests in the lab to see whether the azotosome could actually form on Titan, the team found that under certain conditions, candidate compounds in methane self-assemble into membrane-like structures.

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 Post subject: Re: Mysterious Titan
PostPosted: Fri Oct 21, 2016 10:11 am 
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Seasonal changes on Titan

http://www.europlanet-eu.org/titan-expe ... l-changes/

Images at the link are the same as above, FYI. Still an interesting read.

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 Post subject: Re: Mysterious Titan
PostPosted: Tue Nov 01, 2016 8:46 am 
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Astronomers find that Titan is full of steep, liquid-filled canyons

http://www.sciencealert.com/astronomers ... ed-canyons

Quote:
"The canyons found in Titan's north are even more surprising, as we have no idea how they formed. Their narrow width and depth imply rapid erosion, as sea levels rise and fall in the nearby sea," said Hayes.

"This brings up a host of questions, such as where did all the eroded material go?"


Mind you, Titan is 'warm' for an object beyond the ice line. We're also dealing with ices, not rock.

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 Post subject: Re: Mysterious Titan
PostPosted: Thu Nov 10, 2016 7:08 am 
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Summer Clouds on Saturn's Moon Titan

https://www.youtube.com/watch?v=0seT55Jk4Ko

One frame taken every 20 minutes for 11 hours.

NASA's full article:

http://www.jpl.nasa.gov/news/news.php?feature=6670

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 Post subject: Re: Mysterious Titan
PostPosted: Fri Nov 25, 2016 12:27 pm 
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Let's Colonize Titan!

https://blogs.scientificamerican.com/gu ... ize-titan/

Quote:
There are dozens of choices among them, but the winner is obvious. Titan is the most Earthlike body other than our original home.


How Humans Could Live on Saturn's Moon Titan

http://www.space.com/28788-living-on-ti ... aphic.html

A handy infographic! Clip-n-save!

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 Post subject: Re: Mysterious Titan
PostPosted: Sat Dec 24, 2016 10:05 am 
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Titan's Mystery Clouds

http://www.astrowatch.net/2016/12/titan ... louds.html

Quote:
Cassini's "T120" and "T121" flybys of Titan, on June 7 and July 25, 2016, respectively, provided views of high northern latitudes over extended time periods -- more than 24 hours during both flybys. Intriguingly, the ISS and VIMS observations appear strikingly different from each other. In the ISS observations (monochrome image at top), surface features are easily identifiable and only a few small, isolated clouds were detected. In contrast, the VIMS observations (color image at bottom) suggest widespread cloud cover during both flybys. The observations were made over the same time period, so differences in illumination geometry or changes in the clouds themselves are unlikely to be the cause for the apparent discrepancy: VIMS shows persistent atmospheric features over the entire observation period and ISS consistently detects surface features with just a few localized clouds.

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 Post subject: Re: Mysterious Titan
PostPosted: Wed Mar 15, 2017 6:58 pm 
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Experiments Show Titan Lakes May Fizz with Nitrogen

http://www.astrowatch.net/2017/03/exper ... -fizz.html

Quote:
The notion of nitrogen bubbles creating fizzy patches on Titan's lakes and seas is relevant to one of the more enchanting unsolved mysteries Cassini has investigated during its time exploring Titan: the so-called "magic islands." During several flybys, Cassini's radar has revealed small areas on the seas that appeared and disappeared, and then (in at least one case) reappeared. Researchers proposed several potential explanations for what could be creating these seemingly island-like features, including the idea of fields of bubbles. The new study provides details about the mechanism that could be forming such bubbles, if they are indeed the culprit.


What else has nitrogen bubbles?

Guinness Stout

https://web.stanford.edu/group/Zarelab/ ... iquid.html

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 Post subject: Re: Mysterious Titan
PostPosted: Thu Mar 16, 2017 8:47 pm 
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Titan: Nitrogen Bubbles and ‘Magic Islands’

http://www.centauri-dreams.org/?p=37332

Quote:
“In effect, it’s as though the lakes of Titan breathe nitrogen,” Malaska said. “As they cool, they can absorb more of the gas, ‘inhaling.’ And as they warm, the liquid’s capacity is reduced, so they ‘exhale.'”


Sadly the original paper is paywalled and sci-hub.cc is no longer available.

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 Post subject: Re: Mysterious Titan
PostPosted: Tue Mar 28, 2017 7:58 am 
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The Electric Sands of Titan

http://www.astrowatch.net/2017/03/the-e ... titan.html

Quote:
“If you grabbed piles of grains and built a sand castle on Titan, it would perhaps stay together for weeks due to their electrostatic properties,” said Josef Dufek, the Georgia Tech professor who co-led the study. “Any spacecraft that lands in regions of granular material on Titan is going to have a tough time staying clean. Think of putting a cat in a box of packing peanuts.”

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 Post subject: Re: Mysterious Titan
PostPosted: Wed May 10, 2017 9:54 am 
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Cloud Bands Streak Across Titan

https://www.jpl.nasa.gov/spaceimages/de ... d=PIA21450

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 Post subject: Re: Mysterious Titan
PostPosted: Wed May 17, 2017 3:49 pm 
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Saturn's small satellites, to scale

http://www.planetary.org/blogs/emily-la ... scale.html

Quote:
Here's the first comparison I produced. When you enlarge it to its full resolution, it has 100 meters per pixel. These are all the smallish moons in close orbits around Saturn (with the exception of Phoebe, which is a bit out of place here, representing all the wayward irregular moons in distant orbits).

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 Post subject: Re: Mysterious Titan
PostPosted: Wed May 31, 2017 7:23 am 
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Saturn's moon Enceladus may have tipped over

http://www.deccanchronicle.com/science/ ... study.html

Quote:
Researchers found evidence that the moon's spin axis - the line through the north and south poles - has reoriented. Examining the moon's features, the team showed that Enceladus appears to have tipped away from its original axis by about 55 degrees - more than halfway toward rolling completely onto its side.

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 Post subject: Re: Mysterious Titan
PostPosted: Sat Jun 17, 2017 9:06 am 
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Scientists Have Identified What Caused Those Crazy Scars on Saturn's Largest Moon

https://www.sciencealert.com/scientists ... rred-titan

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 Post subject: Re: Mysterious Titan
PostPosted: Tue Jul 11, 2017 6:58 am 
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Calm Seas on Saturn's Moon Titan Offer a Smooth Landing for Future Missions

https://www.seeker.com/space/planets/th ... e-missions

Surf's not up.

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 Post subject: Re: Mysterious Titan
PostPosted: Fri Jul 14, 2017 9:14 am 
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https://twitter.com/JPMajor/status/885702019058675712

Quote:
Looking down at the north pole of Titan; colored raw image acquired by @CassiniSaturn in methane CB3 filter on July 10


Attachments:
titan.jpg
titan.jpg [ 29.2 KiB | Viewed 1224 times ]

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 Post subject: Re: Mysterious Titan
PostPosted: Mon Jul 31, 2017 7:51 pm 
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Molecules that Could Form “Membranes” Found Above Titan

http://www.the-scientist.com/?articles. ... ove-Titan/

Quote:
A 2015 computer modeling study published by a group at Cornell University found that vinyl cyanide was likely to self-assemble into strong and flexible membrane-like structures called azotosomes. “The flexibility of that membrane would be the same as the flexibility for our cell membranes on Earth, which is really cool because they’re totally different in chemical composition,” Paulette Clancy, a Cornell chemical and biomolecular engineer who coauthored the 2015 study, tells The Verge.

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 Post subject: Re: Mysterious Titan
PostPosted: Sat Aug 05, 2017 7:58 am 
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An Astrobiological Role for Titan’s Complex Chemistry?

https://www.centauri-dreams.org/?p=38230

Quote:
An interesting thought, because the three signals Palmer and team found in millimeter wavelength spectra from ALMA observations in 2014 confirm what Cassini had already hinted at, which in turn reinforce laboratory simulations of Titan’s atmosphere. A surface rife with pools of hydrocarbons — and Titan is a place of methane rains, rivers and seas — could allow molecules of vinyl cyanide to link together, forming membranes that resemble the lipid-based cell membranes found on Earth. Titan’s complex organic molecules along with its nitrogen atmosphere and the presence of carbon-based molecules are provocative ingredients.

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 Post subject: Re: Mysterious Titan
PostPosted: Fri Oct 13, 2017 4:58 pm 
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Intense Storms Batter Saturn’s Largest Moon

http://www.astrowatch.net/2017/10/inten ... rgest.html

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 Post subject: Re: Mysterious Titan
PostPosted: Mon Nov 06, 2017 12:02 pm 
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Enceladus Has a Porous Core That Keeps Its Ocean Hot

http://www.popularmechanics.com/space/n ... ocean-hot/

Quote:
The tiny moon of Saturn has an unusual core that's like a pile of hot sand or mud.

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