For the folks who belive mars can have life.

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C Olival

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Message 1148437 - Posted: 3 Sep 2011, 1:28:18 UTC - in response to Message 1147169.  

If life is found in Europa, Titan, Mars, then probably would be on the bacterial level, multicellular; but doubtfull that any other planetary or lunar body in the Solar System would have inteligent life other than Earth. No doubt that life exists in the Milky Way, just hard to imagine a galaxy with over 100 billion stars,and Sol is the only star that hosts a planet with life.
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Profile William Rothamel
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Message 1148446 - Posted: 3 Sep 2011, 2:23:47 UTC - in response to Message 1148437.  
Last modified: 3 Sep 2011, 2:24:18 UTC

When you think about all the things that have to be in balance for intelligent life then you may feel that perhaps there are extraordinarily few such planets in the Milky Way system. Such planets might be hopelessly far away.
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Profile Michael John Hind
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Message 1148582 - Posted: 3 Sep 2011, 18:19:43 UTC
Last modified: 3 Sep 2011, 18:22:00 UTC

There would be no 'embarrassment' at all. Such a find would be startling!


Ml1, us who take a great interest in the search for life in the universe would not
I suspect be startled by some form of life being found on another planet. I suspect that we all expect something to be found but tend to generally disagree as to whether or not the life discovered will be that of the intelligent type.
...I would be startled though if we did discover intelligent or even human life out there in the universe somewhere. If we found intelligent life in the universe via signals picked-up by Seti then I'd be Startled and then become very excited by it. Just hope though that if they were vastly more intelligent than us that they do not reply on oil as a commodity. For if they did and they were running very short of it they may came and raid Earth in an attempt to steal ours.
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Message 1148628 - Posted: 3 Sep 2011, 20:05:40 UTC - in response to Message 1140692.  

Mars was warmer in the past. The temp may be warmer underground. Digging may find fossils left over from the warmer climate that Mars once had.
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C Olival

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Message 1148716 - Posted: 3 Sep 2011, 23:16:30 UTC - in response to Message 1148582.  

Probably, inteligent life would not look like humans, but i suspect that inteligent life in another planet would be bipedal. Nature tends to favor life forms that have a better ability to survive the elements. The laws of nature apply the same to every point in space and life is no exception.
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Message 1148889 - Posted: 4 Sep 2011, 14:59:26 UTC

The number of extremities and the type of locomotion maybe depends on the conditions of the the planet where the species live. if there is a high gravity the species may move pentpedal or there won't be any extremities (like a snake). A lower gravity may gives preferences to bipedal locomotion.
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Message 1148919 - Posted: 4 Sep 2011, 16:56:24 UTC - in response to Message 1148908.  

Bipedalism for four-limbed creatures allows us to swing through the trees as well as walk upright in the savannas. We can also stay on the ground and pick fruit, nuts and and berries.
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Message 1148974 - Posted: 4 Sep 2011, 19:16:51 UTC

More limbs means more brain power needed for control means less brain power available for abstract thought. I would imagine that 2 legs would be the most likely for intelligent life.

Asymmetrical, odd numbered limbed life would take even more brain power than even limbed creatures so while three legs is possible, three legs plus intelligence is less likely.
Pure mathematics is, in its way, the poetry of logical ideas.

Albert Einstein
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C Olival

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Message 1149221 - Posted: 5 Sep 2011, 17:05:34 UTC - in response to Message 1148908.  

Inteligent life being pentpedal, or tri-pedal, that would pose great stress in the skelletal structure. Like here on Earth, pentpedal locomotion would apply more toward the small life forms, such as insects, archanids. Whereas bipedal locomotion allows more speed, running from danger, hunting. Could not imagine a 7 feet tall tarantula, just not nature efficient.
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Message 1149284 - Posted: 5 Sep 2011, 18:34:31 UTC - in response to Message 1149221.  
Last modified: 5 Sep 2011, 18:34:44 UTC

Inteligent life being pentpedal, or tri-pedal, that would pose great stress in the skelletal structure. Like here on Earth, pentpedal locomotion would apply more toward the small life forms, such as insects, archanids. Whereas bipedal locomotion allows more speed, running from danger, hunting. Could not imagine a 7 feet tall tarantula, just not nature efficient.

Let's see here: Cheetah, cat, about 70 MPH. Usain Bolt, Human, about 23 MPH. Faster?

Conclusion: Quadrupeds are faster than bipeds.
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C Olival

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Message 1149350 - Posted: 5 Sep 2011, 21:11:25 UTC - in response to Message 1149284.  

conclusion: inteligent life here on Earth= bipedal,which is higher primates= humans. Survival of the fitest. Yes, mamelians are mostly four legged, with the exceptions of marine mamals; however, apes are mostly bipedal. Bird are bipedal too, if we want to emphasize bipedalism.
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C Olival

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Message 1149365 - Posted: 5 Sep 2011, 21:36:14 UTC - in response to Message 1148919.  

Quick question for whoever is familiar, is the Hubble space telescope able to identify planets of Earth's size? Has the Centauri system been observed by the Hubble space telescope?
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Message 1149423 - Posted: 6 Sep 2011, 3:15:18 UTC - in response to Message 1149365.  

I don't think so. You cannot directly observe a planet. You must record the light curve of the star as the planet passes in front of it, or you must be able to track a motion of the star as the planet goes around it. You need special instruments and software to process the data. Hubble was not built to search for planets, as instead Kepler was.
Tullio
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Message 1149975 - Posted: 8 Sep 2011, 4:54:00 UTC

We also need to consider outside influences. The dinosaurs ruled earth for millions of years but never got smart enough to be aware of more than their immediate surroundings. So as that big rock was hurtling closer and closer to an impact with earth the didn't have a clue.

Now it remains to be seen whether humans are smart enough to avoid a similar fate or an equally disasterous one we bring upon ourselves.

But what the heck does all of this have to do with whether microbes live or have lived on Mars?
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
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C Olival

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Message 1150640 - Posted: 10 Sep 2011, 0:37:58 UTC - in response to Message 1149975.  

I agree, there is a higher probability of us humans destroying ourselves and the planet via wars, diseases, climatic changes, or as we all know; the Sun eventually will go red giant phase and Earth will be be toasted in the process. That brings forth the argument of which is, how and when will humans develop feasible propulsion systems to travel to other stars?
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C Olival

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Message 1150643 - Posted: 10 Sep 2011, 0:43:15 UTC - in response to Message 1149975.  

Question, if an alien civilization has powerful radio telescopes, could those telescopes capture signals from many setalites orbiting Earth? Earth must be like a beacon with all those setalites orbiting it. Earth would stand out due to artificial nature of the radio signals given off by setalites.
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Message 1150762 - Posted: 10 Sep 2011, 8:24:58 UTC - in response to Message 1150643.  

Satellites are low power and their antennas are pointed at earth.
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Message 1150783 - Posted: 10 Sep 2011, 10:09:49 UTC - in response to Message 1150643.  

... Earth must be like a beacon with all those setalites orbiting it. ...


Not from satellites, but from other vastly more powerful transmitters from such as TV and radio broadcast transmitters and from radar. I'd guess those transmissions may reach as far as a 100 light years or so before being swamped by galactic noise.


Keep searching,
Martin




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Message 1150855 - Posted: 10 Sep 2011, 15:30:25 UTC

TV broadcasts in Italy (no cable TV) have switched from analog to digital so I had to buy a decoder for my old analog TV set.So a question arose: are we searching for digital or analog signals? I know radars can use both.
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Message 1151029 - Posted: 11 Sep 2011, 2:21:26 UTC - in response to Message 1150855.  

The Carrier would most likely be analog. The information would be either. A series of shapes could also be sent. Maybe rectangles and triangles--analog signals that would pop up out of the noise under autocorrelation.
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Message boards : SETI@home Science : For the folks who belive mars can have life.


 
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