More results for the possibility of Life on Mars - Page 4

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Author Message
UR


Posts: 57

Reply: 61



PostPosted: September 30, 2010 8:19 PM 

Re #59 The author of the above was me --UR, and the response was meant to be for Ben . Apologies to Ben I don't know how this happened.

Joe Smith


Posts: 86

Reply: 62



PostPosted: October 1, 2010 10:42 AM 

More oxygen than we thought near the surface of Mars?

Carbon dioxide,decreasing,,the higher the altitude?

[link]

Joe Smith


Posts: 86

Reply: 63



PostPosted: October 15, 2010 3:37 PM 

Well Said INDEED,!!!,!!!,!!!,rlewis,!,!,
j.
But could we continue?

Kevin Author Profile Page



Posts: no

Reply: 64



PostPosted: November 1, 2010 6:40 AM 

Hot Springs on Mars could have supported Life.

http://www.universetoday.com/77090/ancient-hot-springs-spotted-on-mars/

Barsoomer


Posts: 344

Reply: 65



PostPosted: November 9, 2010 3:19 PM 

Signatures of a Shadow Biosphere

by PCW Davies et al.

link

Interesting paper about "weird life," or life as we don't know it.

Kevin Author Profile Page



Posts: no

Reply: 66



PostPosted: November 18, 2010 7:40 AM 

Experiments in the Atacama go back to the Viking tests for the Curiosity mission, Perchlorates are increasingly a major factor in achieving some results.

[link]

dx


Posts: 1

Reply: 67



PostPosted: November 23, 2010 6:00 PM 

Hello Ben>>>

Your 59 has opened a new phase of insight and possible scientific understanding>>>>as in WHY hunt for DNA? Isn't that 'OUR mother tongue' and belongs to Earth's identity? Is DNA the absolute truth for identification of alien life? Please excuse my ignorance, for I must undertake more courses in biology, chemistry, archeology-geology and other melded and combined disciplines to understand a simple organism thing to sort out the HOW to examine alien 'matter' to resolve it's composition?

I guess I am asking, would it actually have DNA as we know it? Could we resolve the issue into a research paper of authority and use? And the most ask Q is how would we identify alien DNA...if it exited?

[toc] Our Oppy is on Mars roving around for 6.10 years>>>need I say more about 'identification' of objects?

But I understand what you say-so can we really examine an alien DNA sample and really call it DNA from OUR Earthly perspective? It would seem that we have to do this identification of its material make-up anyway for scientific satisfaction and categorization of NEW curious things. What courses could fulfill and quell my thoughts about that?

I am a thinking man>>>what courses should I take? I may invest the time.

yt
dx
Shocked

dx


Posts: 1661

Reply: 68



PostPosted: November 23, 2010 6:03 PM 

shit>>>just saw UR as the author of 59...apologies Ben.

yt
dx
GEEEZZZZ
Confused

UR


Posts: 57

Reply: 69



PostPosted: November 23, 2010 7:20 PM 

Dx,
Barsoomer has a reference to a paper on strategies for identifying 'wierd life' here in the terran enviornment- see #65. The writers make the point that an unidentified biosphere may already exist here on earth.
DNA is as you say our mother tongue here, but really we can't be sure that it is the exclusive carrier of life on earth. Hence we can be even less sure that it is the exclusive carrier in the Cosmos as a whole.

UR


Posts: 57

Reply: 70



PostPosted: November 23, 2010 7:26 PM 

Test

dx


Posts: 1661

Reply: 71



PostPosted: November 23, 2010 8:45 PM 

UR>>>

thanks for your comment and understanding my query>>>>[this site is getting a bit trying as to posts and time stamps].
I'll read the 65. Thanks

frustrating indeed.

yt
dx

UR


Posts: 57

Reply: 72



PostPosted: November 24, 2010 3:44 PM 

Dx,
Here's another complicating aspect to the whole thing.
Given the contention that DNA may not be the life carrier. If we do ever manage to meet an 'intelligent' species its unlikely its metabolism would operate on a scale similar to our own. Potentially it could be 1000s of times faster or slower than our own. The issue of communication with it would then be even further complicated.
Imagine if it operated so slowly that (assuming there was no delay due to distance) even its response to 'hello how are you?' took generations of our lives to produce!
Of course we wont know for sure until we try, and we cant try it if we don't seek and find extra terran life first.

Kevin Author Profile Page



Posts: no

Reply: 73



PostPosted: November 30, 2010 10:04 AM 

NASA Astrobiology Conference planned 2pm EST 2nd of Dec. They have an embargo on all details until then.

Very interesting Watson!

[link]

zoost


Posts: 56

Reply: 74



PostPosted: November 30, 2010 4:10 PM 

The part that grabs my attention is this bit in the title of the press release NASA Sets News Conference on Astrobiology Discovery. So the obvious question that jumps to mind is this Has NASA discovered some sort of biological life on another planet or perhaps a moon orbiting a planet in our own solar system?

The geeks over at Kottke.org did some digging on the participants in the conference and found out a few details that hint at what we are looking at for Thursday. Pamela Conrad is a geobiologist and wrote a paper about life on Mars. Felisa Wolf-Simon is an oceanographer and has written on photosynthesis using arsenic. Steven Benner is a biologist that is part of the Team Titan program studying the largest moon of Saturn. James Elser is an ecologist that is part of a NASA-funded program dubbed Follow the Elements. Take all of those factoids and mix them up and something very interesting emerges. Could NASA be revealing the existence of some sort of life on Titan that uses arsenic for photosynthesis? It could be only the announcement that arsenic and other elements conductive to life on Titan have been found, which is still a major discovery.

zoost


Posts: 56

Reply: 75



PostPosted: November 30, 2010 4:14 PM 

http://kottke.org/10/11/has-nasa-discovered-extraterrestrial-life

Update: According to Alexis Madrigal, the answer to the hyperbolic question in the headline is "no".

I'm sad to quell some of the @kottke-induced excitement about possible extraterrestrial life. I've seen the Science paper. It's not that.

http://twitter.com/alexismadrigal/status/9614997667717120

UR


Posts: 57

Reply: 76



PostPosted: November 30, 2010 8:33 PM 

Given the obvious need to be conservative the 'No' answer isn't a surprise.

When an announcement of 'Yes' is ever made I would like it to be as close to 100% definite as possible .

Unduly optimistic announcements or those with too many holes are definitely not helpful.

I believe the technology deployed to date is still insufficient to provide the degree of certainty needed.

Maybe the Conference will just announce that something requires further study.

Barsoomer


Posts: 344

Reply: 77



PostPosted: November 30, 2010 10:13 PM 

My guess, based on the scientists involved, is that it involves some insight into the origin of life, and what variations might be possible.

Kevin Author Profile Page



Posts: no

Reply: 78



PostPosted: December 1, 2010 4:54 AM 

Rumour has it something has been found here on Earth:

[link]

dx


Posts: 1661

Reply: 79



PostPosted: December 5, 2010 8:38 AM 

Kye>>>

Thanks for the article in your 40. When I read it and saw the rare carbon-7 and carbon-6 I thought of the latest NASA findings and public announcement this week about microbes that substitutes arsenic for phosphorus at Mono Lake, and quickly put together that the rarer carbon-7 could be implied to make methane, all without the capability of detection.

Yeah, I'm a big picture thinker! LOLOL

Now Kye, I'm no biologist or chemist [are we made of carbon-6?] but can put a few things together if it makes sense!!!!

...and on further thought, could we humans be the rare carbon substance in the Universe...oh-oh, shoes on the other foot now, isn't it?

yt
dx
Wink

Kevin Author Profile Page



Posts: no

Reply: 80



PostPosted: January 4, 2011 6:36 AM 

Thought I would just post this link from Astronomy Cast, there is an episode on the MERs about which we know as much as anyone but it is the previous one on Exotic Life that I found very interesting. Basically as many have said here in the past you cannot compare what is going on elsewhere in the Solar System to what happens here on Earth. There are a few breaks in the recording at the beginning so please bear with it these guys produce these programmes on a shoe string. There is a terrific archive for those who are unfamiliar with Astronomy Cast and a terrific way to while away the dark winter evenings.

http://www.astronomycast.com/

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