Hitomi's Soft X-ray Spectrometer (SXS) instrument captured data from two overlapping areas of the Perseus galaxy cluster (blue outlines, upper right) in February and March 2016. The resulting spectrum has 30 times the detail of any previously captured, revealing many X-ray peaks associated with chromium, manganese, nickel and iron. Dark blue lines in the insets indicate the actual X-ray data points and their uncertainties. Credits: NASA's Goddard Space Flight Center