While no evidence of life beyond Earth has been found (yet), it is assumed that life and habitable planets are the norm (per the Copernican Principle). Meanwhile, exoplanet studies have revealed several rocky planets orbiting within the habitable zones of nearby dwarf suns. But as Columbia University Professor David Kipping argues in a recent paper, there is evidence that Earth could be an outlier, while rocky planets orbiting red dwarfs may not be capable of supporting advanced life.
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