A rocky planet 48 light-years away in the constellation Cetus has become the first world in a habitable zone ever confirmed to hold an atmosphere, and scientists found it by watching helium quietly leak into space - Space Daily
Source:Space Daily
Helium escaping from LHS 1140 b has provided the first firm atmospheric detection for a rocky planet in a habitable-zone orbit, while leaving its surface conditions and lower atmosphere unresolved.
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