[{"term": "Solar System", "definition": "The Sun and all objects that orbit around it, including planets, moons, asteroids, and comets."}, {"term": "Orbit", "definition": "The curved path an object follows as it revolves around another object due to gravity."}, {"term": "Rotation", "definition": "The spinning of an object on its axis (causes day and night on Earth)."}, {"term": "Revolution", "definition": "The movement of an object around another object (Earth revolves around the Sun, creating a year)."}, {"term": "Light-Year", "definition": "The distance light travels in one year — about 5.88 trillion miles."}, {"term": "Galaxy", "definition": "A massive system of stars, gas, and dust held together by gravity."}]