Quote:
Originally Posted by renormalised
Given everything being equal and the planet's physical characteristics, there's a fair chance that it is. But that still doesn't mean it is, for certain. It may not be and you are correct in saying it's an assumption. They need some direct observations of the planet to be able to confirm whether it is habitable or not.
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Carl's said it all .. but what I have difficulty with is wrapping my mind around the words underlined.
For example, in our Solar System .. at what point do we say Mars is habitable … as distinct from not habitable .. ? Short of astronauts setting up shop there for a couple of years .. and maybe (or not) surviving ?
Seems the probabilities will always drive the answer to the question.
(Mind you, Earth IS habitable - no probabilities in that statement).
Cheers