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An ancient super-Earth offers an unexpected clue that life in our galaxy could be older than scientists thought
14 days ago | By Business Insider
Artist's rendition of the hot, rocky planet in TOI-561 - one of the oldest, most metal-poor planetary systems discovered yet in the Milky Way.
W. M. Keck Observatory/Adam Makarenko
A super-Earth planet 280 light-years away seems to be about 10 billion years old, adding to growing evidence that rocky planets have existed almost as long as our galaxy .
Ancient rocky planets offer further evidence that extraterrestrial life may have existed long before humans.
Scientists may have better success looking for signs of long-gone alien life than for active civilizations.
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