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Thread: Do you believe in possibility of life in other galaxies?

  1. #1 Do you believe in possibility of life in other galaxies? 
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    With over a hundred billion galaxies in the universe. It is hard for me to believe that there is not at least one other solar system with life. Especially, when some scientists claim that they have already found some exoplanets that can be like Earth


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    Simpler question: Is there life in planets in other stars (~ 100 billion) within our galaxy? So far NASA has discovered 3200 star systems with planets.


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    Quote Originally Posted by mathman View Post
    Simpler question: Is there life in planets in other stars (~ 100 billion) within our galaxy? So far NASA has discovered 3200 star systems with planets.
    Scientists found recently an exoplanet that reminds Earth and there is a possibility that some forms of life can live there. I don`t expect that there live something intelligent like human life though.
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    Quote Originally Posted by bearnard bale66 View Post
    Scientists found recently an exoplanet that reminds Earth and there is a possibility that some forms of life can live there. I don`t expect that there live something intelligent like human life though.
    That is the biggest issue with regard to establishing if life exists elsewhere in our galaxy. Clearly we won't be visiting any distant planets "likely" to have life for a very long time, if ever.

    Making contact by radio transmission seems like our only real hope of establishing that some form of life exists at all within the Milky Way. There could be a lot of planets with life, but we will not likely know of them otherwise. Simple telescopic observations of distant worlds will never tells us this, or so it would seem.

    Hopefully such life will be close enough that we do not have to wait 100s (or 1000s) of years between sending and receiving.

    It is bad enough waiting hours for data from distant spacecraft we have sent into the solar system. Think how bad it would be to wait many years to hear from some new friends.......
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    Quote Originally Posted by Double Helix View Post
    Quote Originally Posted by bearnard bale66 View Post
    Scientists found recently an exoplanet that reminds Earth and there is a possibility that some forms of life can live there. I don`t expect that there live something intelligent like human life though.
    That is the biggest issue with regard to establishing if life exists elsewhere in our galaxy. Clearly we won't be visiting any distant planets "likely" to have life for a very long time, if ever.

    Making contact by radio transmission seems like our only real hope of establishing that some form of life exists at all within the Milky Way. There could be a lot of planets with life, but we will not likely know of them otherwise. Simple telescopic observations of distant worlds will never tells us this, or so it would seem.

    Hopefully such life will be close enough that we do not have to wait 100s (or 1000s) of years between sending and receiving.

    It is bad enough waiting hours for data from distant spacecraft we have sent into the solar system. Think how bad it would be to wait many years to hear from some new friends.......
    Yeah, I know that it`s impossible to get there. Even if we could travel with a speed of light, it will take much time to reach this exoplanet. Also, I`ve read that this planet might be ntidally locked to its star with a high radiation environment from the frequent stellar flares. So likely this planet has no atmosphere and and probably no life.
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    Quote Originally Posted by Double Helix View Post
    Quote Originally Posted by bearnard bale66 View Post
    Scientists found recently an exoplanet that reminds Earth and there is a possibility that some forms of life can live there. I don`t expect that there live something intelligent like human life though.
    That is the biggest issue with regard to establishing if life exists elsewhere in our galaxy. Clearly we won't be visiting any distant planets "likely" to have life for a very long time, if ever.

    Making contact by radio transmission seems like our only real hope of establishing that some form of life exists at all within the Milky Way. There could be a lot of planets with life, but we will not likely know of them otherwise. Simple telescopic observations of distant worlds will never tells us this, or so it would seem.

    Hopefully such life will be close enough that we do not have to wait 100s (or 1000s) of years between sending and receiving.

    It is bad enough waiting hours for data from distant spacecraft we have sent into the solar system. Think how bad it would be to wait many years to hear from some new friends.......
    There is also an issue in this exoplanet. As I have already mentioned this planet might not have no atmosphere and probably no life. But still, I believe that this planet might have something. I assume that some forms of live can live on some of these exoplanets but I don`t expect that there live something intelligent like human life though. I hope that such technology like Ariel space telescope or the most expensive telescope by NASA James Webb Space Telescope will give us a hint. https://www.skyrora.com/blog/tag/uk-space-industry
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    If faster than light travel or communications is impossible, i believe any intelligent species would not choose to colonize anything beyond their own solar system. Doing so, would inevitably create an enemy, or a competitor, after a few hundred years or so, capable of destroying them.

    I do believe it still is viable to send a probe to another world, simply to sterilize their world. Like using some kind of nanobot, virus, or simply something to send an asteroid towards the planet, before life could grow too advanced, and could become a threat. If i couldn't destroy all life on a planet easily, i would at least monitor it for a few millennia, and when life got advanced enough, send the object, to sterilize.

    If faster than light travel/communications is possible, then this wouldn't happen. Conquest/harvesting/study, would be much more logical than destruction.

    So, the fact that we are still here, and on the verge of sending things out of our sphere of influence, within 1000 years or so. Is reason enough to assume one of the following.

    - FTL is possible.
    - We are alone in the universe. In terms of Intelligence.
    - Intelligent life is extremely rare, thus enough space for everyone, and no risk of ever discovering other species.
    - We are about to be destroyed.
    - There is a sort of protective species that makes sure other civilizations aren't sending probes to annihilate each other.

    Take your pick.. Multiple can still be true by the way.
    Growing up, i marveled at star-trek's science, and ignored the perfect society. Now, i try to ignore their science, and marvel at the society.

    Imagine, being able to create matter out of thin air, and not coming up with using drones for boarding hostile ships. Or using drones to defend your own ship. Heck, using drones to block energy attacks, counterattack or for surveillance. Unless, of course, they are nano-machines in your blood, which is a billion times more complex..
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    Quote Originally Posted by Zwolver View Post
    If faster than light travel or communications is impossible, i believe any intelligent species would not choose to colonize anything beyond their own solar system. Doing so, would inevitably create an enemy, or a competitor, after a few hundred years or so, capable of destroying them.

    I do believe it still is viable to send a probe to another world, simply to sterilize their world. Like using some kind of nanobot, virus, or simply something to send an asteroid towards the planet, before life could grow too advanced, and could become a threat. If i couldn't destroy all life on a planet easily, i would at least monitor it for a few millennia, and when life got advanced enough, send the object, to sterilize.

    If faster than light travel/communications is possible, then this wouldn't happen. Conquest/harvesting/study, would be much more logical than destruction.

    So, the fact that we are still here, and on the verge of sending things out of our sphere of influence, within 1000 years or so. Is reason enough to assume one of the following.

    - FTL is possible.
    - We are alone in the universe. In terms of Intelligence.
    - Intelligent life is extremely rare, thus enough space for everyone, and no risk of ever discovering other species.
    - We are about to be destroyed.
    - There is a sort of protective species that makes sure other civilizations aren't sending probes to annihilate each other.

    Take your pick.. Multiple can still be true by the way.
    As for me there is no planets in the Solar system that is worth to be colonized. I assume the best way is to try preserve Earth as it the best option of the planet where we can live. It`s too early to talk about colonizing planets from other galaxies as our technology is too weak for that and I don`t think we will be able to build to create such.
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    Detecting planets likely to have life might be achieved by very large telescopes.

    Here is one example:

    https://www.airspacemag.com/space/pi...net-180977302/
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    Quote Originally Posted by Double Helix View Post
    Detecting planets likely to have life might be achieved by very large telescopes.

    Here is one example:

    https://www.airspacemag.com/space/pi...net-180977302/
    Unfortunately, we can only use telescope to study them. They are too far and even if we could travel with the speed of light it will take a few years to reach them. Moreover, to invent a spacecraft that can travel with the speed of light it will take centuries
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    Quote Originally Posted by bearnard bale66 View Post
    Quote Originally Posted by Double Helix View Post
    Detecting planets likely to have life might be achieved by very large telescopes.

    Here is one example:

    https://www.airspacemag.com/space/pi...net-180977302/
    Unfortunately, we can only use telescope to study them. They are too far and even if we could travel with the speed of light it will take a few years to reach them. Moreover, to invent a spacecraft that can travel with the speed of light it will take centuries
    It would seem that potential evidence for life on other planets may come sooner than some expected.

    The Webb Telescope, if successfully launched and deployed later this year (or whenever!), is capable of spotting possible evidence for life on other planets far from earth (1). Because it captures infrared light, it is capable of some pretty remarkable studies of exoplanet atmospheres. The NASA link below explains how this works. It also explains a lot about how this telescope will function.

    Have also included the Wiki link (2) for those who want more details on this fabulous telescope.

    Let's all hope (some can pray if that helps!) this telescope makes it safely to its observation location near the second Lagrange point (L2).



    1. https://www.jwst.nasa.gov/content/science/origins.html


    2. https://en.wikipedia.org/wiki/Webb_Telescope
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    Found another use of the Webb telescope in the search for life on exoplanets. It involves taking advantage of a unique interaction between oxygen molecules in their atmospheres (see link below*). It relies on collisions between oxygen molecules (O2) and should be sensitive to detection in the infrared.

    Since oxygen is unstable, its presence in an atmosphere of an exoplanet at significant levels might indicate the signature of life. It has been noted that there are other ways to produce oxygen, but the only one we are certain of happens here on earth, and we know where it comes from. So that may help to decide probability of at least photosynthetic life forms on other planets.

    Combined with other observations of the same planet looking for other atmospheric bio-signatures might help to increase the probability that the observations have some validity for life to exist there. Making a hard call on it seems pretty iffy, but it depends a great deal on the resolution of the IR spectroscopy with Webb's inherent resolving capacity.


    "Webb Telescope Will Search for Oxygen on Alien Worlds"

    * https://www.space.com/webb-space-tel...detection.html
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    I wanna say that a few words about the possibility of life in other galaxies. There is one theory about Proxima B . I have heard some interesting ideas about Proxima B and some scientists are convinced that this exoplanet might be the second Earth. What do you think about that?
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    I wanna say that a few words&nbsp;<span style="color: rgb(20, 20, 20); font-family: Arial; font-size: 11px; white-space: pre-wrap;">about the possibility of life in other galaxies. There is one theory about Proxima B . I have heard some interesting ideas about Proxima B and some scientists are convinced that this exoplanet might be the second Earth. What do you think about that?
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    Intelligent life, maybe not. But other life? Almost certainly!
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    I think it's real, but it's just that humanity still hasn't figured out how to do it. Enable GingerCannot connect to Ginger Check your internet connection
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