Test your knowledge of planets, moons, and the cosmos.
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The Solar System is humanity's cosmic neighbourhood — a vast collection of eight planets, dozens of moons, millions of asteroids, and countless comets all orbiting a single star. From scorching Mercury to the icy reaches of Neptune, each world is unique: Venus has a runaway greenhouse effect that makes it hotter than any other planet, while gas giants like Jupiter and Saturn dwarf everything else with storms that have raged for centuries.
Space exploration has revolutionised our understanding of this system. Voyager 1, launched in 1977, is now travelling through interstellar space — the first human-made object to leave our Solar System. The New Horizons probe revealed Pluto's heart-shaped nitrogen plains, while the Parker Solar Probe skimmed the Sun's corona at over 530,000 km/h. Saturn's moon Titan hosts liquid methane lakes, and Jupiter's moon Europa may harbour a subsurface ocean.
Whether you're fascinated by the mechanics of planetary orbits, the violent history of the inner Solar System, or the cutting-edge missions pushing the boundaries of exploration, the cosmos never stops surprising us.
