Tentative evidence suggests Proxima Centauri - the nearest star to Earth - might have another planet, this time a super earth:
phys.org
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Possible discovery of a new super-Earth orbiting Proxima Centauri
Astronomers have discovered another candidate exoplanet orbiting our neighbor Proxima Centauri. A paper announcing these results was just published in the journal Science Advances. If confirmed, it will be the second exoplanet discovered to be orbiting the star.