An article published in the journal “Astronomy & Astrophysics” reports the discovery of the largest supernova remnant in X-rays. A team of researchers used observations conducted with the Spektr-RG space telescope’s eROSITA instrument to create its first X-ray map of the sky to locate the traces of the supernova remnants that have been nicknamed Hoinga. The discovery was confirmed in radio frequency data from the CHIPASS survey conducted with the Parkes radio telescope.