Do You Believe In Aliens or UFOs?

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Bones

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    To be similar to earth, a planet must been in a solar system in which the star is the same size and age as our sun, and that planet must orbit this sun from a similar distance and must experience the same gravitational pull from planets closer and farther than it from the sun. This planet must be of similar diameter and shape as ours, and have a similar elemental composition in both the core and the atmosphere. These are the most basic requirements for the development of life as ALL evidence to date points to. If the only example of life is found on the conditions that exist on our planet, what evidence do we have that life can exist outside of these conditions?

    How about the water they found on Mars?

    What of the creatures on our own ocean floor that live on gases that would instantly kill any other life on the planet?
     

    gashin

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    Water isn't the only thing required for life to exist....The existence of those creatures only re-inforces the truth that life can only exist in a very small window of conditions which includes not only these gases, but the gravitational pull of earth and the sun and the moon, not to mention the chemical composition of the planet, that led to the conditions that allowed these animals to evolve in these specific niches. This isn't evidence for any probability that life can exist outside of these conditions... and we have yet to find any planet that has conditions to support even those organisms that live in such extremes on earth....
    How about the water they found on Mars?

    What of the creatures on our own ocean floor that live on gases that would instantly kill any other life on the planet?
     

    gashin

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    Water on mars - without all the other conditions required for life this means NOTHING. If there was proof on life on mars then we could make some theories and probabilities of life existing in conditions found outside of earth - but the lack of such proof makes any claims that planets with water must necessarily support life ridiculous.
    Again -
    WATER on MARS!
     

    Zofryer

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    This is my problem with these figures - it makes the unwarranted assumption that there are planets capable of supporting life. Where is the proof that there are planets out there that can support life and how can anyone make any speculations about the probability of life-supporting planets without a shred of evidence?

    Umm, actually there is a ton of evidence. Water being one of the most common molecules in the Universe being a big part of that.
     

    gashin

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    That isn't evidence. In addition to water, life requires the proper gravitational forces to develop along with the necessary chemical compositions of the core and atmosphere, as well as the proper climate. There is no evidence of a planet that has all the requirements for life to exist as we know it. Also water isn't one of the most common molecules in the universe, and is in fact extremely rare. What other planet have we found other than mars (which no longer has water based on all evidence) has water?
    Umm, actually there is a ton of evidence. Water being one of the most common molecules in the Universe being a big part of that.
     
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    Bones

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    Water isn't the only thing required for life to exist....The existence of those creatures only re-inforces the truth that life can only exist in a very small window of conditions which includes not only these gases, but the gravitational pull of earth and the sun and the moon, not to mention the chemical composition of the planet, that led to the conditions that allowed these animals to evolve in these specific niches. This isn't evidence for any probability that life can exist outside of these conditions... and we have yet to find any planet that has conditions to support even those organisms that live in such extremes on earth....

    The chemicals that exist here on Earth are the same ones that exist throughout the Universe - The chemical composition of Earth is not an exception - It is the rule - It is the stuff - There is no other stuff - It is the essence of arrogance to assume we are so special - What would be the point in the rest of the Universe - Decoration for our amusement?
    Why does even admitting the possibility seem to offend you so much?
     

    Bones

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    That isn't evidence. In addition to water, life requires the proper gravitational forces to develop along with the necessary chemical compositions of the core and atmosphere, as well as the proper climate. There is no evidence of a planet that has all the requirements for life to exist as we know it. Also water isn't one of the most common molecules in the universe.

    AS we KNOW it - - - - - What about life that may be different?
    How can you know about something you don't know?
    Suddenly man knows everything? - It was once state of the art Science to think that Rats spontaneously generated from old rags - Now we know it all? - Come on man -
     

    gashin

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    The chemicals that exist on earth are arranged in a manner that support life (i.e. nitrogen being dominant in our atmosphere while a pure oxygen atmosphere would kill most life). There is no evidence of a planet that has the same composition of molecules that will support life.
    The chemicals that exist here on Earth are the same ones that exist throughout the Universe - The chemical composition of Earth is not an exception - It is the rule - It is the stuff - There is no other stuff - It is the essence of arrogance to assume we are so special - What would be the point in the rest of the Universe - Decoration for our amusement?
    Why does even admitting the possibility seem to offend you so much?
     

    Zofryer

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    The chemicals that exist here on Earth are the same ones that exist throughout the Universe - The chemical composition of Earth is not an exception - It is the rule - It is the stuff - There is no other stuff - It is the essence of arrogance to assume we are so special - What would be the point in the rest of the Universe - Decoration for our amusement?
    Why does even admitting the possibility seem to offend you so much?

    It goes a little deeper than this too. Not only is the Universe huge, it's friggin old. The famous quote being, if the life of the Universe were shrunk down to a year, human beings haven't even existed for one second yet. There's a good 10-15 billion years for other life to have existed. When you factor in the massive unfathomable amount of time along with the immense size and the fact that everything is made from the same "star dust", the chances of there never ever being any life but that on earth starts to approach .99999(repeated) to 1.
     

    gashin

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    How can you claim that something we don't know exists? It's the same as claiming the existence of God. Science doesn't consider anything to be true without evidence - the lack of evidence isn't the evidence of proof.
    AS we KNOW it - - - - - What about life that may be different?
    How can you know about something you don't know?
    Suddenly man knows everything? - It was once state of the art Science to think that Rats spontaneously generated from old rags - Now we know it all? - Come on man -
     

    gashin

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    This star dust arranged in a manner to support life on Earth. There is no evidence that it has arranged anywhere else to support life.
    It goes a little deeper than this too. Not only is the Universe huge, it's friggin old. The famous quote being, if the life of the Universe were shrunk down to a year, human beings haven't even existed for one second yet. There's a good 10-15 billion years for other life to have existed. When you factor in the massive unfathomable amount of time along with the immense size and the fact that everything is made from the same "star dust", the chances of there never ever being any life but that on earth starts to approach .99999(repeated) to 1.
     

    Zofryer

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    How can you claim that something we don't know exists? It's the same as claiming the existence of God. Science doesn't consider anything to be true without evidence - the lack of evidence isn't the evidence of proof.

    It goes deeper than that. Science doesn't CARE about your agenda or mine at all. It's just method to employ for learning and discovery.
     

    Bones

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    The chemicals that exist on earth are arranged in a manner that support life (i.e. nitrogen being dominant in our atmosphere while a pure oxygen atmosphere would kill most life). There is no evidence of a planet that has the same composition of molecules that will support life.

    Well - You are wrong - I grew tired of humoring -
    Here ya go - Your "shred"

    Computer models predict Gliese 581 C is either a rocky planet like Earth or a waterworld covered entirely by oceans.

    "We have estimated that the mean temperature of this super-Earth lies between 0 and 40 degrees Celsius [32 to 104 degrees Fahrenheit], and water would thus be liquid," Udry said.

    The scientists discovered the new world using the HARP instrument on the European Southern Observatory 3.6 meter telescope in La Sille, Chile. They employed the so-called radial velocity, or "wobble," technique, in which the size and mass of a planet are determined based on small perturbations it induces in its parent star's orbit via gravity.

    Udry said there was a fair amount of time between the calculation of Gliese 581 C's size and the realization it was within its star's habitable zone. "That came at the end," Udry said.


    SPACE.com -- Major Discovery: New Planet Could Harbor Water and Life
     

    gashin

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    Computer models aren't evidence. We have to travel there and collect hard scientific data that life does exist on this planet. We may or we may not find life - there may be conditions that inhibit life that we cannot discern from such a vast distance - such as inhibitory radiation or a thin atmosphere. Even the scientists who made the discovery aren't claiming that this finding is proof that life exists outside of earth - only that IF life exists outside of earth we may be one step closer with this discovery.
    Well - You are wrong -
    Here ya go

    Computer models predict Gliese 581 C is either a rocky planet like Earth or a waterworld covered entirely by oceans.

    "We have estimated that the mean temperature of this super-Earth lies between 0 and 40 degrees Celsius [32 to 104 degrees Fahrenheit], and water would thus be liquid," Udry said.

    The scientists discovered the new world using the HARP instrument on the European Southern Observatory 3.6 meter telescope in La Sille, Chile. They employed the so-called radial velocity, or "wobble," technique, in which the size and mass of a planet are determined based on small perturbations it induces in its parent star's orbit via gravity.

    Udry said there was a fair amount of time between the calculation of Gliese 581 C's size and the realization it was within its star's habitable zone. "That came at the end," Udry said.


    SPACE.com -- Major Discovery: New Planet Could Harbor Water and Life
     

    Bones

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    Computer models aren't evidence. We have to travel there and collect hard scientific data that life does exist on this planet. We may or we may not find life - there may be conditions that inhibit life that we cannot discern from such a vast distance - such as inhibitory radiation or a thin atmosphere. Even the scientists who made the discovery aren't claiming that this finding is proof that life exists outside of earth - only that IF life exists outside of earth we may be one step closer with this discovery.

    What do you think they based the model on? - Did you read the link? - This data for the model from direct observation - They didn't just pull it outa their ... - Just as I suspected - You demand a "SHRED" of evidence - I give you a BIG STEAMING PILE of it - and you reject it - LOL - Classic closed mind - You keep changing the rules - First it was a "shred of evidence" (for a planet that could even remotely support life as we know it) Now you require PROOF - LOL

    Why are you so upset about admitting to the possibility? - How would the existence of life on other planets change the nature of yours?
     
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