Astronomers have discovered a super-Earth six light-years away around Barnard's Star, the second closest star system to Earth. The new planet has a frigid orbit that puts it far beyond the "snow line" in this solar system, which is a whopping 12 billion years old.

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Astronomers have discovered a super-Earth six light-years away around Barnard's Star, the second closest star system to Earth. The new planet has a frigid orbit that puts it far beyond the "snow line" in this solar system, which is a whopping 12 billion years old.