The cosmos just got a whole lot more intriguing! On July 2, 2025, NASA's Fermi Gamma-ray Space Telescope detected a record-breaking gamma-ray burst (GRB) that lasted a staggering seven hours. This GRB, named GRB 250702B, was so long that it defies all previous understanding of these cosmic phenomena. It originated from a distant, dusty galaxy eight billion light-years away, passing through a thick layer of material that blocks visible light, making it invisible to our eyes. The telescopes could only detect its presence through infrared and high-energy X-ray wavelengths. The mystery deepens as scientists propose three potential explanations: the death of a massive star, a black hole consuming a star, or the merger of a helium star and black hole. As Jonathan Carney, the lead author of the study, noted, "This was the longest gamma-ray burst that humans have observed — long enough that it does not fit into any of our existing models for what causes gamma-ray bursts." This unprecedented event challenges our understanding of the universe and invites further exploration and research.
