The big switch: jets (inset) from the core of radio galaxy NGC326 appear to have changed direction suddenly, interpreted as a result of black holes merging. The jets initially pointed to the 10 o'clock and 4 o'clock directions. They now point to 2 o'clock and 8 o'clock. Credit: National Radio Astronomy Observatory / AUI, observers Murgia et al.; STScI (for the inset).
