The eROSITA consortium releases its second data release (DR2) catalog, which nearly doubles the number of known eROSITA X-ray sources to about two million. The release is described as the most comprehensive high-energy census of the cosmos to date, based on accumulated observations from the telescope’s sky survey.
eROSITA is the primary instrument aboard the Russian-German Spektr-RG space observatory and is designed to study the soft X-ray sky. It was developed by the Max Planck Institute for Extraterrestrial Physics (MPE) and collaborators. The mission launched in 2019 and conducts deep, high-resolution imaging over large areas of the sky to map high-energy astronomical sources.
Across the outlets, the main emphasis is consistent: DR2 represents a major expansion of the catalog and represents an advance in the survey’s coverage and completeness. Both sources frame the release as a significant update within the ongoing eROSITA program, while not detailing specific changes beyond the overall source count increase.
