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    Default Another possibility for finding life out there



    There has been much discussion about the number of stars with a planetary system and the, so far, disappointing number of finds that are outside of the conditions that we assume will support life. While planets that are too close to their star or too far from it are not candidates some of the planets that are in their stars habitable zone but are too big or are gas giants might just have moons that meet the criteria.

    Several Sci Fi writers have placed living beings on moons in their stories and it seems to me that when moons are added into the equations the number of likely candidates should expand greatly.
    Bob DeWoody

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    The easiest planets to detect are big gas giants or planets very close to the sun. That's why we've found a lot of them so far. Be patient, we're able to detect smaller planets further out now and they're getting discovered

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    I currently subscribe to the idea of the rare earth hypothesis...or more accurately, my variation which is rare Human Level Intelligence or HLI. In any case, I suspect both earthlike planets or satellites with HIL beings are going to be quite rare. I'd like to be proven wrong but the incremental nature of science leads me to think it will be a long time before we find a truly earthlike world or satellite.

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    I like your idea for life on the moons of planets. It is similar to what is in the film 'Avatar'. Detecting earth like planets are very tough and then to find whether life in there is beyond the scope of current observations, i suppose.
    Krishnakumar

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    I was merely pointing out that if and when we develope the ability to look more closely for signs of life that the moons of extra solar planets might contain what we are looking for. Personally I agree that if such a discovery is dependent solely on our abilities it may be hundreds to thousands of years before any form of life is detected elsewhere and intelligent life maybe never. On the other hand ET may arrive tomorrow.
    Bob DeWoody

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    I didn't intend for anything to come off as criticism. I just put up my own speculation. Its anybodies guess what will actually happen. Like you said, ET could arrive tomorrow.

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    Quote Originally Posted by Lj3d View Post
    I didn't intend for anything to come off as criticism. I just put up my own speculation. Its anybodies guess what will actually happen. Like you said, ET could arrive tomorrow.
    Ok. But I have a thought that if some ET or so is going to land on earth, our observatories spread around the world in almost all the frequencies should have detected it. I may be proven wrong.
    Krishnakumar

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    When we talk about ETs landing tommorow, that more or less assumes they will make themselves known in the most obvious and hopefully peaceful ways which wouldnt really require detection efforts since we would know they were here from news media coverage. Most of the worlds observatories are not well suited for detection of something coming in unannounced due to a combination of factors such as physical location and design/configuration of the equipment. And organization like NORAD could be useful for that purpose but if a hypothetical landing expedition is being covered by the major news outlets, we won't really need NORAD for detection either. At least thats my two cents anyway.

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    OK,now we have gone off on a tangent but I will continue on this tack. If and when ET comes to earth and they want to make their pressence known it will either be a friendly visit or a hostile visit. Either way any ET with the capability to get here from wherever they come from will surely possess technology that can render our devices useless to detect them until they are here. I hope if they show up they are friendlier than we are.
    Bob DeWoody

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    What I believe is that whichever ET comes to earth, if it is possible with their advances in science & technology, we will come to know it before they reach our planet. According to Relativity, even if they started for earth at or more than the speed of light, it will take centuries to reach here. I read today about Nomad planets, which cannot reach earth also. Life on such planets will be extremely rare too.

    Coming back to the topic, I can't think that there are ET's watching us from outer space somewhere in Milkyway or further. The reason for my argument is that even with Kepler we are not even able to detect the atmosphere of the outer planets. Just think how advanced will be the observatories of ET's if they exist! There is possibility for extraterrestrial life, but not as much advanced to go to other star systems or galaxies, like you watch in Sci-fi movies.

    I didn't mean any offense. Just put up my thoughts.
    Krishnakumar

 

 
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