7. Which of the following planets has only one moon? A. Venus B. Mercury C. Earth D. Jupiter

Earth is the only one among these options that has just one moon! It's often affectionately referred to as "the Moon," and it plays a key role in our planet's tides and stabilizing its axial tilt. Fun fact: you can see it shining in the night sky, and it even influences countless myths and legends across cultures. While Mercury and Venus have no moons at all, Jupiter boasts a stunning total of 79 known moons! It's a mini solar system of its own, with Ganymede being the largest moon—bigger than the planet Mercury itself! The varying sizes and features of these moons offer exciting insights into planetary formation and evolution.