Dawn‑era Supernovae Challenge Models

JWST follow‑ups to a gamma‑ray burst revealed a supernova from only ~730 million years after the Big Bang whose spectral/photometric properties resemble much more recent explosions. That observation contradicts simple expectations that ultra‑low‑metallicity early stars would produce systematically bluer, brighter transients, suggesting early nucleosynthesis, progenitor structure, or explosion physics need rethinking. — If early supernovae are not the exotic events we expected, that changes timelines for metal enrichment, the sources driving reionization, and priorities for future deep‑field observations and telescope time.