to detect very-high-energy gamma-ray bursts from a galaxy 400 light-years from Earth. The 10-meter-diameter spherical mirror is made up of many smaller mirrors. The detector on the telescope consists ...

The signal from the gamma ray burst, dubbed GRB 221009A, had been traveling for about 1.9 billion years before it reached Earth, making it among the closest known "long" GRBs, whose initial ...

The gamma-ray burst (GRB) occurred two billion light-years from Earth and illuminated much of the galaxy. Images of the rare and powerful cosmic phenomenon show a halo and "bullseye" like shapes.

Space enthusiasts and X-Files fans, get ready, because NASA astronomers have found an unexplained "signal ... Gamma-ray Space ...