Astronomers using the X-SHOOTER instrument at ESO’s Very Large Telescope (VLT) have detected light from a gamma-ray burst at a redshift of 6.3, meaning the light departed more than 12.8 billion years ago. This discovery is a rare occurrence that, thanks to the extreme luminosity of such sources, offers a window into the infant Universe, which is otherwise difficult to observe. This image, taken by the X-SHOOTER instrument at ESO’s Very Large Telescope...
