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Poll: Who harbors life?
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View Poll Results: Who?
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Titan
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1 |
12.50% |
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Mars
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4 |
50.00% |
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Europa
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6 |
75.00% |
Member Since: 8/13/2012
Posts: 32,832
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These 3 planets/satellites are likely to harbor life:
Mars: methane and formaldehyde in the atmosphere not explainable, proven to have had an atmosphere and oceans/water, and some of its meteorites on earth seem to have fossilized bacteria
Titan: depletion of methane and acetylene at the surface, no explanation yet. Life would use methane instead of water
Europa: warm water oceans and volcanoes under the surface
Which of the three iconic objects do you think harbors life?
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Member Since: 3/15/2013
Posts: 4,235
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Member Since: 2/6/2012
Posts: 29,767
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In all likelyhood.... none of them.
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Member Since: 11/16/2011
Posts: 32,177
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They need to speed up the Europa mission and get California some ****ing water.
But in the end, I don't think life would exist on these planets/moons. But I'd bet they would make sweet vacation spots for the rich.
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Member Since: 8/13/2012
Posts: 32,832
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Add Venus to the list:
http://news.discovery.com/space/alie...ife-130516.htm
Unexplainable sulfur compounds in the clouds can only be likely explained with having biotic origin 
Quote:
Between the years 1937 to 1961, six invasions of ultra-rapid gelatine-liquifying bacteria appeared in rain-water at the Norman Lockyer Observatory, Sidmouth [England]. The initial onsets of these "invasions" occurred on average 59 ± 17 days following near-dated geomagnetic storms to Venus inferior conjunctions. The author of the report describing these events came to speculate that the bacteria, which had complete tolerance to highly toxic photographic silver salts and showed strong fluorescence in ultraviolet light, may have originated in the atmosphere of Venus and were transported to earth by the solar wind.[44]
The Venusian atmosphere has been found to be sufficiently out of equilibrium as to require further investigation.[41] Analysis of data from the Venera, Pioneer, and Magellan missions has found the chemicals hydrogen sulfide (H2S) and sulfur dioxide (SO2) together in the upper atmosphere, as well as carbonyl sulfide (OCS). The first two gases react with each other, implying that something must produce them. In addition, carbonyl sulfide is noteworthy for being exceptionally difficult to produce through inorganic means.[42] Furthermore, one of the early Venera probes detected large amounts of chlorine just below the Venusian cloud deck.[45]
It has been proposed that microbes at this level could be soaking up ultraviolet light from the Sun as a source of energy, which could be a possible explanation for dark patches seen on UV images of the planet.[46][47] Large, non-spherical cloud particles have also been detected in the cloud decks. Recently, abundance and vertical distribution of these unknown ultraviolet absorber in the venusian atmosphere has been investigated from analysis of Venus Monitoring Camera images.[48] But their composition is still unknown.[41]
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https://en.wikipedia.org/wiki/Atmosphere_of_Venus
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
In all likelyhood.... none of them.
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on the opposite, i think bacterial life is almost everywhere in the universe, bacteria on earth can live in the most extreme conditions and some have survived space travels
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Member Since: 9/1/2012
Posts: 25,973
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Europa 
But I do think Mars is another likely candidate.
If we were ever able to find life, I don't think it will be in our Solar System.
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Member Since: 2/6/2012
Posts: 29,767
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Quote:
Originally posted by MaRy
on the opposite, i think bacterial life is almost everywhere in the universe, bacteria on earth can live in the most extreme conditions and some have survived space travels
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We have yet to find real evidence of it thriving off of earth, so you belief isn't really founded on anything.
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
We have yet to find real evidence of it thriving off of earth, so you belief isn't really founded on anything.
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there are plenty of experiments of bacteria surviving and thriving in replica conditions of other worlds, look it up
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Member Since: 2/6/2012
Posts: 29,767
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Quote:
Originally posted by MaRy
there are plenty of experiments of bacteria surviving and thriving in replica conditions of other worlds, look it up |
Bacteria from earth thriving there.
Not naturally occurring bacteria. MASSIVE difference.
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
Bacteria from earth thriving there.
Not naturally occurring bacteria. MASSIVE difference.
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but bacteria from earth likely came from meteorites... it's so simple
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Member Since: 5/18/2012
Posts: 20,576
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Quote:
Originally posted by Waffles O'Brien
In all likelyhood.... none of them.
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You can't be for certain. Liquid water is one of the things needed for life as know it for our world.
Even if there is no life, it's an alternative for when humans mess up Earth.
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Member Since: 2/6/2012
Posts: 29,767
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Quote:
Originally posted by MaRy
but bacteria from earth likely came from meteorites... it's so simple |
No evidence at all to support this.
All conjecture.
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Member Since: 9/1/2012
Posts: 25,973
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I also find it interesting that Europa's oceans are so vast and deep, especially since we don't even know much about our own oceans. Space travel and the potential existence of extraterrestrial life gets me so pumped 
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
No evidence at all to support this.
All conjecture.
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It's a very common scientific theory, educate yourself 
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Member Since: 2/6/2012
Posts: 29,767
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Not trying to be a downer, but I think people vastly overestimate the chances of life to form.
Lots of confirmation bias.
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Member Since: 2/6/2012
Posts: 29,767
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Quote:
Originally posted by MaRy
It's a very common scientific theory, educate yourself |
Stop being condescending.
Theory is not fact. Anyone can support any idea they WANT to believe through theories.
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
Not trying to be a downer, but I think people vastly overestimate the chances of life to form.
Lots of confirmation bias.
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the point is life formed somewhere and spread from there pretty much everywhere, I did not even know there are 36 recorded meteorites coming from Mars on earth
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Member Since: 2/6/2012
Posts: 29,767
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Quote:
Originally posted by MaRy
the point is life formed somewhere and spread from there pretty much everywhere, I did not even know there are 36 recorded meteorites coming from Mars on earth |
If there is life on say, Mars, it is FAR more likely that it was transplanted from earth to mars through meteors... not the other way around.
Earth in special in that it was very stable for a long period of time with few impacts, stable climate, etc. Early life was incredibly fragile, and while it is possible that it could form elsewhere, it is far less likely on say a cold moon that is under the influence of the massive tidal forces of Jupiter.
I will be thrilled if they find life, but alien films have fooled us into the delusion that the universe must be filled with life in every corner. Despite the fact that we have found no evidence to support it.
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Member Since: 8/13/2012
Posts: 32,832
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Quote:
Originally posted by Waffles O'Brien
If there is life on say, Mars, it is FAR more likely that it was transplanted from earth to mars through meteors... not the other way around.
Earth in special in that it was very stable for a long period of time with few impacts, stable climate, etc. Early life was incredibly fragile, and while it is possible that it could form elsewhere, it is far less likely on say a cold moon that is under the influence of the massive tidal forces of Jupiter.
I will be thrilled if they find life, but alien films have fooled us into the delusion that the universe must be filled with life in every corner. Despite the fact that we have found no evidence to support it.
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earth has not been stable at all though, just for what like, a billion year or less, the solar system has been created 5 billion years ago... and bacterial/early life is not fragile but it seems very resilient, bacteria live on clouds on earth and if they escape to the universe they might become dormant and live again after thousands of years under the right situation..
Quote:
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On April 20, 1967, the unmanned lunar lander Surveyor 3 landed near Oceanus Procellarum on the surface of the moon. One of the things aboard was a television camera. Two-and-a-half years later, on November 20, 1969, Apollo 12 astronauts Pete Conrad and Alan L. Bean recovered the camera. When NASA scientists examined it back on Earth they were surprised to find specimens of Streptococcus mitis that were still alive. Because of the precautions the astronauts had taken, NASA could be sure that the germs were inside the camera when it was retrieved, so they must have been there before the Surveyor 3 was launched. These bacteria had survived for 31 months in the vacuum of the moon's atmosphere. Perhaps NASA shouldn't have been surprised, because there are other bacteria that thrive under near-vacuum pressure on the earth today. Anyway, we now know that the vacuum of space is not a fatal problem for bacteria.
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