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Live Science on MSN4 tiny, Earth-like planets found circling 2nd-closest star system to us — and could be visited by future human generationsA quartet of small, rocky exoplanets likely circle Barnard's Star, around 6 billion light-years from Earth, putting them in ...
When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...
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