Anonymousabout 2 hours ago
University of Chicago undergraduates, working with Sloan Digital Sky Survey data, have discovered SDSS J0715-7334 — the most metal-poor star ever observed, with just 0.005% of the Sun's heavy elements. The red giant, now drifting through the Milky Way's halo roughly 80,000 light-years from Earth, appears to have formed in the Large Magellanic Cloud from gas enriched by a single massive Population III supernova, offering a direct chemical fingerprint of nucleosynthesis conditions in the first few hundred million years after the Big Bang.