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As I'm sure you know, four more exoplanets were recently discovered around TRAPPIST-1 (Gillon et al. (2017)), bringing the total to seven "” all, amazingly, presumably rocky and near the star's hab...
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#1: Attribution notice removed
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2020-06-01T14:13:51Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/72332 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/