COSMOS: Solar System Explorer

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

Recent changes:
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.