This and the posts that will follow in the next days is the report of the second Commissioning of the X-Shooter spectrograph, which has just started. I am now sitting in the control room of the VLT, in Cerro Paranal, […]
Taking advantage of the light echo phenomenon, an international team of astronomers has been able to observe the spectrum of a supernova exploded 400 years ago, and it was able to determine its type.