The discovery of at least two rocky 'super-Earths' orbiting a nearby dwarf star could provide vital clues in the search for extra-terrestrials, astronomers say.While the worlds are unlikely to be habitable for life as we know it, the star and its are among the closest multi-world systems to Earth, at just 33 light-years away.This makes the system an excellent target for further investigation, in part because it could contain more planets, including the potential for one in the habitable zone.
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