Earlier this year, it was reported that Earth was hit by the brightest gamma-ray bursts seen since the dawn of civilization. Now, a team of astronomers has assigned a value to the energy contained in those blasts and it's staggering to say the least.
Gamma ray bursts are the most energetic explosions since the Big Bang – and now astronomers have detected the most powerful one yet. A beam of high-energy radiation up to 18 times more powerful than the previous record swept over Earth last weekend.
Astronomers have detected the highest-energy light ever seen. Hundreds of gamma rays were detected with ultra-high energies, with the most powerful signals crossing the Peta-electronvolt threshold – much higher than thought possible in our galaxy.