Astronomers are puzzled by an unprecedented cosmic event, GRB 250702BDE, a gamma-ray burst that lasted nearly a full day, far exceeding the typical duration of milliseconds to minutes. Unlike standard bursts from dying stars, this event exhibited repeated, periodic outbursts, baffling scientists. Theories range from a unique stellar death to a star being torn apart by an unusual intermediate-mass black hole. Further observation is ongoing to pinpoint the source and understand this extraordinary cosmic phenomenon.

Prepared by Olivia Bennett and reviewed by editorial team.