The high-energy radiation beam was 18 times stronger than the previous record.
On Sunday, October 9th, astronomers around the world were privy to an unusually bright and long-lasting pulse of high-energy radiation that swept over Earth,
They called the event the GRB 221009A, and it made for an unexpectedly exciting start to the 10th Fermi Symposium, now underway in Johannesburg, South Africa. The astronomers traced back the signal to the constellation Sagitta and estimate that it traveled 1.9 billion years to reach Earth. They believe it represents theformed by a massive star collapsing under its own weight. When this occurs, a nascent black hole drives powerful jets of particles traveling near the speed of light and piercing through the star, emitting X-rays and gamma rays.
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