Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: The first of these objects was discovered in 1920, but was not classified until the 1970s. That object was Hidalgo. Recently, the first binary pair of these objects was discovered. It consists of Echidna and Typhon. Charles Kowal discovered the first of these objects, which was later reclassified after the discovery of ice-jets emanating from it. The unstable orbits of these bodies are caused by the perturbation of a nearby planet. These bodies are believed to originate in the Kuiper Belt and examples of them include Echeclus, Chariklo, and Chiron. They exhibit behavior that is in some ways a hybrid of asteroids and comets, hence their name. For 10 points, name these icy planetoids that orbit between Jupiter and Neptune, named after Greek mythological half-men half-horses.
Output:
Science