Explaining The Universe on Instagram: "Follow (us) @ExplainingTheUniverse to learn something NEW every day 🧠💫 Jupiter is the largest planet in the solar system, made mostly of hydrogen and helium with no solid surface. It’s known for its swirling storms, including the Great Red Spot, and its strong magnetic field. Surrounded by faint rings and at least 95 moons, Jupiter’s largest, Ganymede, is bigger than Mercury. The planet’s immense size and power make it a key object of study for understand