None close. The nearest one is 4.25 light years away.

Minor quibble. That is the distance to Promixa Centauri. To my knowledge, we don't know if there are habitable planets there. Proxima B is within the "goldilocks" zone, I believe. But we haven't had any measurements consistent with an oxygen atmosphere (and it would be foolish to send people there without confirming they could at least breathe). I recall reading a month or so ago that via spectroscopic analysis they had detected an atmosphere that contained either O2 or water vapor (can't find it quickly). Something like 20 LY away(?). That would be a potential candidate.

Also...a point of ethics: if it is conducive to carbon-based life, then there is a high probability some is already there. Would it be right for us to take their planet, or even a portion of it? A lot of sci-fi starts with aliens trying to do that with us (e.g. War of the Worlds, V, etc). We certainly wouldn't appreciate it if that happened to us.

Berkshire Hathaway FAQ

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