@MontereyJack,
MontereyJack wrote: All the ones I've seen say "artist's conception". Which basically means they're products of imagination, rather than fact.
They may not be entirely imagination. There may be some additional data about elements, quantities, composition, structures - on the grounds of spectral analysis of s.th. ... that are not exactly 'imagination'.
MontereyJack wrote: Basically all we know is that there's a planet there and roughly it's size, and that it lies within the range where water IF THERE IS ANY THERE, could conceivably be liquid.
Hydrogen and oxygen are not so rare elements in the universe ... and carbon in a star system at the age of 10 Bys ... and the composition of the stars is not so much different throughout the universe.
MontereyJack wrote: ... which based on our current sample of ONE, the earth, is a prerequisite for life AS WE KNOW IT.
One cannot make generalisations on the grounds of ONE example. It is difficult to say who is more irresponsible.
MontereyJack wrote: We knoe NOTHING about its atmosphere, if any. We know NOTHING about the presence of water there. We certainly know nothing about any trees there (which are hypothesized in one picture, which talks about its being "forested". That's sheer unsupported guess.
Where had this water come from (in the messages on the web) in that case?
MontereyJack wrote: They're calling it a "cousin".
Cousin at least presupposes common origin. In this case it should have similar physics and chemistry (if not biology). At least the laws of physics and chemistry are supposed to be one and the same throughout the whole universe (that nobody has made the effort to prove yet).
MontereyJack wrote: The SETI folks think the next generation of telescopes may be able to tell us something about an atmosphere. But they're not here yet.
What about the radio telescope - dislocated on two continents. It has more data than the present day computer systems will ever be able to process.
... and what about the database of the Kepler telescope. There must be some computer algorithms able to search for specific patterns which could find something more. Or the DB will remain top secret facility and will be destroyed when the data become useless some day.
MontereyJack wrote: You will notice that Farmerman provided evidence that life doesn't have to be based on carbon, and there do exist self-replicating molecules.
Of course there are self-replicating molecules, but FM cannot explain how they work ... and whether they really are only physics and chemistry and nothing else ... or there is something else that we are missing.
MontereyJack wrote: There exist amino acids in interstellar space, some of the potential building blocks of life.
Where is that ... and how have you detected them? By spectral analysis? Why can't you make spectral analysis of Kepler 186f?
MontereyJack wrote: Kepler 186f, no matter how it turns out, won't prove a slam dunk for anything.
If there is liquid water ... and C and N and O there ... and never has been any life this will prove everything ... it will prove that biology is something more than simple chemistry & simple physics & simple common denominator of physics and chemistry, and that there should be some other components of life (like information science, quantum encryption, quantum communication or whatever) that are highly underestimated by now.