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Rare Second-Generation Star Discovered in Dwarf Galaxy

3/29/2026

Summary

Story summary

Astronomers have discovered PicII-503, a rare second-generation star in the ancient dwarf galaxy Pictor II, about 150,000 light-years away.
PicII-503 has the lowest iron abundance found outside the Milky Way, revealing details of early chemical enrichment.
Its dearth of heavy elements suggests formation from material produced by a low-energy supernova.
Researchers say the discovery supports theories of star formation in primordial galaxies, and the findings were published in Nature Astronomy.

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Story summary

Astronomers have discovered PicII-503, a rare second-generation star in the ancient dwarf galaxy Pictor II, about 150,000 light-years away.
PicII-503 has the lowest iron abundance found outside the Milky Way, revealing details of early chemical enrichment.
Its dearth of heavy elements suggests formation from material produced by a low-energy supernova.
Researchers say the discovery supports theories of star formation in primordial galaxies, and the findings were published in Nature Astronomy.