Blue jets, also known as blue starters, are a type of atmospheric electrical discharge that occurs from the tops of thunderstorms. These unique phenomena are relatively new discoveries, as they were first observed in the 1990s. While "blue jets" is the most commonly used term, there are other synonyms for this stunning event, including blue sprites, blue starters, upward lightning, and chimney lightning. Each of these terms describes a unique aspect or appearance of the discharge, such as the upward direction it travels. While there are different names, all of these terms describe the same fascinating natural occurrence.