N=2 means that we now know how to detect more than the one we are standing on, s... | Hacker News

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roywiggins on Sept 12, 2019 | parent | context | favorite | on: Water found on a potentially life-friendly alien p...

N=2 means that we now know how to detect more than the one we are standing on, so it says a lot about how many we might expect to find soon.

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