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Old 15-March-2008, 01:22 AM
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Default Some new news on Saturns Moons

I am attaching some news clips for all, very interesting.

http://news.bbc.co.uk/2/hi/science/nature/4819370.stm

http://news.bbc.co.uk/2/hi/science/nature/6230381.stm

http://news.bbc.co.uk/2/hi/science/nature/7297408.stm

enjoy
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Old 15-March-2008, 01:47 AM
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I am attaching some excerpts so others can better tell if a visit might be worth the trouble.

http://news.bbc.co.uk/2/hi/science/nature/4819370.stm

Quote:
Earth could seed Titan with life: Terrestrial rocks blown into space by asteroid impacts on Earth could have taken life to Saturn's moon Titan, scientists have announced. [2006 March 18]
http://news.bbc.co.uk/2/hi/science/nature/6230381.stm

Quote:
'Proof' of methane lakes on Titan: The Cassini probe has spotted what scientists say is unequivocal evidence of lakes of liquid methane on Titan, Saturn's largest moon. [2007 January 4]
http://news.bbc.co.uk/2/hi/science/nature/7297408.stm

Quote:
Saturn moon [Tethys] once had an ocean: One of Saturn's moons may once have harboured a liquid ocean beneath its icy surface, scientists have told a major conference in Houston, Texas. [2008 March 14]
[...]
They propose that Tethys' orbit around Saturn was once perturbed by gravitational interactions with another moon - Dione - which made Tethys' orbit more "eccentric".

The resulting tidal forces caused frictional heating of Tethys' interior.

But at some point, the orbital interaction between Tethys and Dione was broken, and Tethys fell back into a less eccentric orbit. As it did so, it began to cool.
At least one was new news.
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Old 16-March-2008, 11:00 PM
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Quote:
Earth could seed Titan with life: Terrestrial rocks blown into space by asteroid impacts on Earth could have taken life to Saturn's moon Titan, scientists have announced. [2006 March 18]
Saturn is so far above us in the Sun's gravity well, that I really don't give this idea much weight. (No pun intended.) Not to mention that those germs would have to survive in space long enough to reach Titan, and then survive on Titan.
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Old 17-March-2008, 02:07 AM
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Yes, it would be a Titanic struggle...
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Old 17-March-2008, 04:52 AM
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it would be amazing if we found life in our own galaxy even better
in our own solar system....
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Old 17-March-2008, 10:55 AM
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Quote:
Originally Posted by mr pachiess View Post
it would be amazing if we found life in our own galaxy even better
in our own solar system....
It sure would, and welcome to BAUT, by the way.
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Old 26-March-2008, 01:07 AM
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Originally Posted by onthink View Post
Maybe one day human beings can creat a planet ourselves, then there will be no struggle.
Huh? If you're talking about space habitats, then I kind of agree; it'll at least give us the option of getting away from those who trouble us. But "no struggle"? That's just not consistent with the species I grew up in.
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Old 27-March-2008, 01:36 AM
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Quote:
Originally Posted by Noclevername View Post
Saturn is so far above us in the Sun's gravity well, that I really don't give this idea much weight. (No pun intended.) Not to mention that those germs would have to survive in space long enough to reach Titan, and then survive on Titan.
Lichens survive 15 days unprotected in space

Bacteria recovered from Moon surveyor 3 may have survived 31 months on the moon
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Old 27-March-2008, 02:49 AM
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Or, much more likely there was no live Streptococcus mitis on Surveyor 3.

Wikipedia: Reports of Streptococcus mitis on the moon

Quote:
Streptococcus mitis lives in the mouth; there is no evidence that it can survive for long even in terrestrial environments outside the human body.
[...]
One of the implements being used to scrape samples off the Surveyor parts was laid down on a non-sterile laboratory bench, and then was used to collect surface samples for culturing.
[...]
On the above evidence, the most parsimonious explanation for the reported recovery of Streptococcus mitis from the Surveyor 3 camera is contamination after its recovery from the Moon. Survival of this bacterium on the surface of the Moon would be very unlikely. This claim has never been documented in any peer-reviewed scientific publication and remains a telling example of the phenomenon of urban myth.
The lunar bacteria don't impress me, but I think we've found a legend that cannot be killed.
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Old 27-March-2008, 05:17 AM
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A tiny fraction of the millions-year journeys a meteor usually needs to pass between planets.
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Old 27-March-2008, 03:36 PM
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True, but the fact is, bacteria can spore up and go into sleep mode almost indefinitely.

250-million-year-old bacteria revived in a laboratory
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Old 27-March-2008, 06:39 PM
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Originally Posted by skrap1r0n View Post
True, but the fact is, bacteria can spore up and go into sleep mode almost indefinitely.

250-million-year-old bacteria revived in a laboratory
Wow, pretty impressive! Does it say what methods were used to revive it? I'd be very interested to know if those conditions can exist in nature. And of course, if a stomach-dwelling bacterium could survive the ocnditions on another planet.
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