Ask Ethan: Ought to Alpha Centauri be our first interstellar goal?

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In an excellent state of affairs, we’d find a world round one other star that supplied sufficient compelling organic, chemical, and geological hints for us to need to picture and probe it up shut, requiring an interstellar mission. In probably the most optimistic state of affairs, it could even be inhabited and/or colonizable by people. (Credit: ESO/M. Kornmesser)

The closest star system to Earth, simply over 4 light-years away, has three stars and a minimum of one Earth-sized planet. Is it time to go there?

in article 1

Assuming humanity can survive the following few a long time and centuries — and that’s an enormous assumption, given the threats of…

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