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Astronomy and Astrophysics
A 'stellar fossil' holds hints of one of the universe's first stars
A 'stellar fossil' holds hints of one of the universe's first stars

Astronomers say they’ve discovered the signature of one of the first stars in the universe whose remains were embedded into the body of another very old star. The discovery, described in the journal Science, sheds light on an ancient type of star that existed during the dark ages of the cosmos. The stars of eons past were not like those of today. Modern-day models like our sun are called population I stars: They’re rich in heavier elements like carbon, oxygen and iron (though “rich” is a relative term – it’s a tiny fraction of the mostly hydrogen-helium body). A much older generation of star, called population II stars, are very metal-poor...

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