From a rifle shot to a supernova, the universe is filled with explosive events. This feature is about the biggest bangs on and off Earth. It begins with events on the human scale, and ends with the largest explosion in the known universe, the Big Bang. You wouldn’t regard some of them as a ‘bang’ in the conventional sense, but they all conform to the definition of an explosion: the rapid release of energy in an extreme manner. Some of them, of course, release energy faster than others.