Take a tour of the Hydra I galaxy cluster. A galaxy in the region, NGC 3312, is "losing cold gas as it moves through the hot gas within the cluster," according to the European Southern Observatory.

Gold mineralization at Van Gogh occurs within a ~30 m wide mylonite zone with up to 5 m intervals of strongly silicified country rock and quartz. The gold-rich intervals locally contain up to 15% ...