Longest gamma ray burst. Nov 20, 2019 · NASA’s Hubble Space Telescope has given astronomers a peek at the location of the most energetic outburst ever seen in the universe — a blast of gamma-rays a trillion times more powerful than visible light. Dec 16, 2025 · On 2 July 2025, however, astronomers detected a highly unusual source that produced repeated outbursts and continued emitting gamma rays for more than seven hours. It was the biggest shot of energy we’ve ever seen, streaming from the universe’s most What's the biggest gamma-ray burst ever recorded? Gamma-ray bursts (GRBs) are extremely energetic flashes of radiation caused by the collapse of massive stars to form neutron stars or black holes. Dec 17, 2025 · Astronomers have observed the longest-ever gamma-ray burst — a powerful, extragalactic explosion that lasted more than seven hours. Jul 2, 2025 · A seven-hour gamma-ray burst, GRB 250702B, stuns astronomers and hints at powerful new cosmic engines still unknown to science. List of gamma-ray bursts The following is a list of significant gamma-ray bursts (GRBs) listed in chronological order. That’s because in a few seconds the gamma-ray burst (GRB) emitted more energy than the Sun will provide over its entire 10-billion year life. 7\,$ kpc, and displays a long-lived afterglow emission in radio to X A gamma-ray burst (GRB) is the most powerful type of explosion known in the universe, releasing an immense amount of energy in the form of gamma rays. Observations from a team led by Carnegie Mellon University are providing crucial information about the possible origin of this unusual event. May 7, 2013 · Two weeks ago, says NASA, astronomers saw the longest and brightest gamma-ray burst ever detected. The majority of these bursts are observed to flash and fade within a few seconds to GRB 250702B is the longest gamma-ray burst (GRB) recorded so far, with multiple gamma-ray emission episodes spread over a duration exceeding $25\,$ ks and a weaker soft X-ray pre-peak $\sim 1\,$ day gradually rising emission. The event consisted of three repeated GRB events (250702B, 250702D, and 250702E) lasting several hours from the same astronomical source, implying Dec 9, 2025 · Astronomers have discovered a seven-hour cosmic explosion, the longest gamma-ray burst ever seen, which could be the first evidence of an intermediate-mass black hole devouring a star. Later, it was also proposed Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they determined it could be the work of a black hole destroying a star. [1] Its duration is longer than 7 hours, implying this event has a different kind of progenitor than normal long GRBs. The researchers described it elegantly: “The angular momentum lost from the orbit goes into the helium star, and when the black hole reaches the center of the core, this high angular momentum will cause the helium core to accrete through a disk. The rare, long-duration burst may reveal new ways to create gamma-ray bursts. GRB 111209A is the second longest lasting gamma-ray burst (GRB) detected by the Swift Gamma-Ray Burst Mission, observed on December 9, 2011. . Dec 11, 2025 · It’s the longest gamma-ray burst ever recorded, lasting at least seven hours, nearly double the previous record. Nov 16, 2023 · Dubbed the "brightest of all time," or the BOAT, a gamma-ray burst detected in 2022 continues to astound astronomers, revealing severe effects in Earth's atmosphere. 6 days ago · In the final months of 2025 alone, the nanosatellite recorded more than 180 hours of X-ray data using its onboard instrument, designed to detect gamma ray bursts —powerful explosions that occur Gamma-ray burst Artist's illustration showing the life of a massive star: Nuclear fusion converts lighter elements into heavier ones; when fusion no longer generates enough pressure to counteract gravity, the star collapses into a black hole. Oct 15, 2025 · A colossal explosion—part gamma-ray burst, part supernova—that lights up the cosmos for hours. GRB 250702BDE was a series of three distinct ultra-long extragalactic gamma-ray bursts (GRB) discovered by the Fermi Gamma-ray Space Telescope on July 2, 2025. These bursts are thought to be associated with the collapse of massive stars into black holes or the merger of neutron stars. It is offset from its host galaxy centre by $\sim 5. This animation shows a more detailed Fermi LAT view of GRB 130427A. This extraordinary event, named GRB 250702B, has become the longest gamma-ray burst ever observed. While most GRBs last only seconds or minutes, this cosmic explosion continued for at least 7 hours — breaking all previous records. GRBs are named after the date on which they were detected: the first two numbers correspond to the year, the second two numbers to the month, and the last two numbers to the day. GRB 250702B, the first event, is the longest duration gamma-ray burst ever discovered. May 3, 2013 · The GeV emission from the burst lasted for hours, and it remained detectable by the LAT for the better part of a day, setting a new record for the longest gamma-ray emission from a GRB. It was first proposed that the progenitor of this event was a blue supergiant star with low metallicity. Dec 26, 2025 · Gamma-ray bursts (GRBs) are among the most powerful explosions in the universe, second only to the Big Bang. GRB 250702B is the longest gamma-ray burst ever detected. vxcyl oifgml zjbw aswhh pqocud phnxo bgwmy tyfic xeizym yie