Free Astronomy Magazine November-December 2025

12 NOVEMBER-DECEMBER 2025 ASTRO PUBLISHING veals the hidden presence of dark matter. Observations used data from the Atacama Large Millimeter/sub- millimeter Array (ALMA) in Chile, the Northern Extended Millimeter An exceptional Einstein cross reveals hidden dark matter by NOIRLab Josie Fenske A n international team of as- tronomers, including re- searchers from ALMA, has discovered a spectacular Einstein Cross in the distant universe that re- D etailed morphology of each of the five images of the Einstein cross, as revealed by ALMA. [P. Cox et al. − ALMA (ESO/NAOJ/NRAO)]