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: In analyzing 31 flybys of this body in 1996, scientist found gravitational anomalies in one, providing evidence for its lumpy interior, while NIMS detected such ocean salts as magnesium sulfate here in 2000, supporting the theory of an ocean deep below its surface. The Hubble Space Telescope detected a thin ozone around this body, and one feature of its surface is the Memphis Facula, which is located within a large dark region known as the Galileo Regio. This body is the only moon in the solar system with a magnetosphere. For 10 points, name this Galilean moon of Jupiter, the largest in our solar system.
Output:
Science