Discovering life elsewhere: How can we be sure?
Planetary Radio: Space Exploration, Astronomy and Science
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What's Greagt About Life?
Carbon is carbon 12, thirteend 14. It's got six protons, six neutrons. If it was all 12 and you couldn't see any 13 or 14 in the metan that's also puts it now more in the plus column. Still doesn't tell us its life, but indeed, those indications are important. One of the things that people have also argued is, if the signal that you see is seasonale andd i must take this opportunity to say, most of what we're talking about is based on biology as we know it on earth.
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