Scientists have identified three new planets around a star they already suspected hosted a trio of worlds.
It means this relatively nearby star, Gliese 667C, now has three so-called super-Earths orbiting in its "habitable zone".
This is the region where temperatures ought to allow for the possibility of liquid water, although no-one can say for sure what conditions are really like on these planets.
Gliese 667C is 22 light-years away.
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