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Message: <blockquote data-quote="Captain NALI" data-source="post: 16542878" data-attributes="member: 352923">The Bad News about Kepler 186f1. It's 500 LY distant.2.  It might be tidally locked because it's closer in than Venus. This  depends on its initial spin rate at formation, which we don't know.3. We have no data on its atmosphere.4. Its surface temperature may be too hot or too cold for life, due to its atmosphere.5.  We can't determine its mass, and so we don't know its density, so we  don't know with certainty the strength of its surface gravity.6. SETI has been focusing on it and has found no radio signals.7. There are some badass solar flares, perhaps one every 4 years or soThe Good News about Kepler 186f1.  Its star is an M-dwarf, easily the most abundant star in our stellar  neighbourhood. There is therefore an excellent chance of finding many  more examplars like this a lot closer to us as surveys continue and  broaden and deepen, with TESS and James Webb shortly to come online.2.  M-dwarfs are typically long-lived and stable. Kepler 186 is stabler  than average, given its characteristics, which tends to put its age at  the older end of the spectrum for M-dwarves - between 2 and 12 BY.  Chances are therefore that it's several BY older than our sun. This in  turn implies that any civilisations arising would likely be much more  developed than our own.3. Upcoming surveys will show us whether it  has an atmosphere and if so, its composition. Wait about 3 years for  that. We live in exciting times.</blockquote>

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