FILE - This image provided by NASA shows two massive galaxy clusters captured by NASA's James Webb Space Telescope and Chandra X-ray Observatory in Jan. 20, 2025, with areas of possible dark matter indicated in blue. (NASA, ESA, CSA, STScI, CXC; Science: James Jee (Yonsei University, UC Davis), Sangjun Cha (Yonsei University), Kyle Finner (Caltech/IPAC) via AP, File)