The Brightest Flash in the Night Sky: A Cosmic Phenomenon
The Brightest Flash in the Night Sky: A Cosmic Phenomenon On October 9, 2022, the night sky was lit up by the brightest flash of light ever recorded, a massive burst of gamma rays from an enormous cosmic explosion approximately two billion light years away. This event, quickly nicknamed the “BOAT” (Brightest of All Time), not only illuminated telescopes worldwide but also disturbed Earth’s upper atmosphere in a way never before detected. The BOAT’s Impact on Earth’s Atmosphere The BOAT’s flash lasted a mere seven minutes, but its afterglow was visible to amateur astronomers for seven hours. It activated lightning detectors in India and triggered instruments typically used to study solar flares. More notably, it affected long wave radio communications in the lower ionosphere, a section of Earth’s upper atmosphere approximately 60 to 350 kilometers above the surface. For the first time, a gamma-ray burst was observed affecting the upper ionosphere, a region extending from 350 to 95...