The images from those new planets, he added, should identify "light from their atmosphere and tell us if they have perhaps methane and oxygen. That will be pretty strong proof they are not only habitable but actually are inhabited."[Source.]
"I am not talking about a planet with intelligence on it. I simply say if you have a habitable world ... sitting there, with the right temperature with water for a billion years, something is going to come out of it.
"At least we will have microbes," said Boss.
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