An unprecedented gamma‑ray burst detected on 2 July 2025 — GRB 250702B — produced hours‑long high‑energy emission from a dusty galaxy 8 billion light‑years away. Astronomers say...
GRB 250702B, detected July 2, 2025, produced gamma-ray emission lasting roughly seven hours. Observations rule out known burst progenitors and point to a helium‑merger scenario ...
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