An article published in the journal “Science Advances” reports the results of a study of the galaxy cluster Abell 2255 which for the first time detected a radio glow on a scale so large that it surrounded the entire cluster. A team of researchers used the LoFar radio telescope for 18 nights over an area four times the size of the full moon to achieve such a detailed result. According to the researchers, the origin of that emission which is at least 16 million light-years wide is linked to the energy released during the cluster formation.