The Bombardier Beetle creates an internal explosion to propel hot, poisonous chemicals at its enemies.  Scientists studying the beetle have shown how it works in an x-ray video of the process. 

What's happening at the center of active galaxy 3C 75? The two bright sources at the center of this composite x-ray (blue)/ radio (pink) image are co-orbiting supermassive black holes powering the giant radio source 3C 75. Surrounded by multimillion degree x-ray emitting gas, and blasting out jets of relativistic particles the supermassive black holes are separated by 25,000 light-years.