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
Astronomers detect brightest light flash ever seen, probably from black hole's birth
Gamma Ray Bursts Archives - Universe Today
A Nearby Neutron Star Collision Could Cause Calamity on Earth
Gamma-ray burst in faraway galaxy disturbed Earth's upper atmosphere - The Hindu
Six cosmic catastrophes that could wipe out life on Earth
Earth's ionosphere changed by gamma ray burst
Scientists think close kilonova explosion could end all life on Earth
Gamma ray burst 2 billion light-years away impacted Earth's
skralyx
Daily Kos: organicus