We may have seen the first magnetar burst outside our galaxy – Ars Technica
Larger / M82, the site of what is likely a giant outburst from a magnetar. NASA, ESA and the Hubble Legacy Team Gamma rays are a broad category of high-energy photons, including anything with more energy than an X-ray. While they are often created by processes such as radioactive decay, few astronomical events produce them … Read more