Nearby core-collapse supernovae (CC-SNe) are typically detected at radio frequencies within weeks to years after explosion. More recently, a growing number of SNe have been found to exhibit late-time radio rebrightening, with flux densities significantly exceeding expectations from standard light curves. Such rebrightening events are likely associated with interactions between the SN shock and dense circumstellar shells shaped by the progenitor’s mass-loss history. Acero et al. report the first detection of radio emission from the Type II supernova SN 2007it, located at a distance of 12.2 Mpc in NGC 5530. The observations were obtained with the ATCA more than 18 years after the explosion as part of the Rebrightening in Interacting Supernova Emission (RISE) program, which monitors nearby core-collapse supernovae for late-time interaction with dense circumstellar material. SN 2007it was detected on 2026 April 8 at 5.5 GHz with a flux density of 3.3 ± 0.1 mJy and at 9.0 GHz with 3.5 ± 0.2 mJy. Its non-detection in publicly available 0.88 GHz ASKAP data from 2026 January 11 suggests either rapidly rising emission or significant internal absorption at lower frequencies. The team assess the prospects for detection at other wavelengths and encourage coordinated follow-up observations across the radio, optical, X-ray, and gamma-ray bands. The image above shows at left the ATCA 9 GHz detection of SN 2007it (cyan circle) from 2026 April 8. The centre of the host galaxy NGC 5530 is marked with a black cross. At right is the Hubble Space Telescope image of NGC 5530 from 2009 May 10, retrieved from the Hubble Legacy Archive, with SN 2007it again marked by a cyan circle.