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Last year, on October 9, we on Earth witnessed the most luminous celestial event ever recorded, by far. It was a gamma ray burst (GRB) at least 10x as bright as any other example ever seen, and it lasted 70x longer than any other known GRB. This was
Gamma ray burst 2 billion light-years away impacted Earth's atmosphere as strongly as a solar flare
The Second Most Powerful Cosmic Ray in History Came from--Nowhere?
Gamma-ray burst in faraway galaxy disturbed Earth's upper atmosphere
Astronomy News at Daily Kos
Gamma ray burst 2 billion light-years away impacted Earth's atmosphere as strongly as a solar flare
Something big hit trees in 774 — a solar super-flare maybe?
Best View Yet of Exceptional Cosmic Explosion – Challenges Established Theory of Gamma-Ray Bursts in the Universe
What would be the impact of a large solar flare or gamma ray burst on Earth? Would it cause destruction? - Quora
Daily Kos: skralyx
