Astronomers using the James Webb Space Telescope have identified the most distant supernova ever observed, associated with gamma-ray burst GRB 250314A at redshift ~7.3, when the universe was only ~730 million years old. Detected initially by SVOM in March 2025 and confirmed with JWST observations ~110 days later, this exploding massive star surprisingly resembles local universe prototypes like SN 1998bw in brightness and spectra, challenging expectations of exotic early stellar deaths. The findings reveal insights into massive star formation during the epoch of reionization, host galaxy properties, and multi-messenger astronomy’s role in fleeting events. This record-breaking detection highlights JWST’s power in probing cosmic origins amid 2025-2026 breakthroughs in early universe studies.
Source: Phys.org / NASA
Link: https://phys.org/news/2025-12-supernova-dawn-universe-captured-james.html






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