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Looking for Extra-Terrestrial Life Just Got More Complicated

When NASA scientists talk about finding proof of life beyond earth they often zero in on the term "biosignatures."  These are the clues that can be spotted when looking at another planet that strongly suggest 'life' is happening. Our planet is a great example, according to Victoria Meadows, an astronomer at the University of Washington who spoke with VOA. If aliens were looking at us, she says, "life would be obvious to a distant observer looking at the ...

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