[{"hint": "My Very Educated Mother Just Served Us Nachos.", "answer": "Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune", "question": "List the eight planets in order from the Sun."}, {"hint": "One is spinning, the other is orbiting.", "answer": "Rotation is spinning on an axis (day/night). Revolution is orbiting around another object (year).", "question": "What is the difference between rotation and revolution?"}]