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Welcome to COSMOS: Solar System Explorer! • Explore the Sun, planets and their moons with real NASA imagery • Discover Andromeda, black holes, dwarf planets and asteroids • Test your knowledge with quizzes at 4 difficulty levels • Earn badges and track your exploration progress • See NASA's Astronomy Picture of the Day No ads, no accounts, no tracking. Unlock all premium regions with a single one-time purchase.
Explore planets, galaxies and black holes with NASA images, quizzes and badges.
COSMOS is a space exploration app built for curious minds. Journey through galaxies, black holes, asteroids and dwarf planets, all in your pocket. EXPLORE THE UNIVERSE • Milky Way (free): explore the Sun, 8 planets and their moons with real NASA photography • Andromeda: voyage 2.5 million light years to our nearest spiral galaxy • Black Holes: from Sagittarius A* to M87*, the first black hole ever photographed • Asteroids: travel the asteroid belt and meet sample-return targets like Bennu and Ryugu • Dwarf Planets: Pluto, Eris, Haumea, Makemake and Ceres, worlds beyond Neptune LEARN AND PLAY • Quick quizzes after exploring each object, with multiple difficulty levels • Earn achievement badges as you explore • Track which planets and objects you have visited across all regions • Compare the sizes of celestial objects • NASA Astronomy Picture of the Day, updated daily BUILT FOR EXPLORERS • Immersive cosmic map with floating regions, nebula glows and smooth animations • Designed for all ages: students, families and space fans PRIVACY FIRST • No accounts, no tracking, no ads • Your progress is stored only on your device ONE-TIME PURCHASE The Milky Way region is free. COSMOS Premium unlocks Andromeda, Black Holes, Asteroids and Dwarf Planets with a single one-time purchase. No subscription: pay once, explore forever. Questions or feedback? Contact us at tech@clk.company