Space Atlas: Explore & Learn

Space Atlas turns questions about the universe into short reads, in-depth stories and interactive experiments. EXPLORE THE UNIVERSE • A main library of 500 cosmic cards, 40 in-depth topics, 10 discovery routes and 5 interactive labs. • Compare eight planets by size, gravity, day length, year length and more. • Two additional mission experiments to explore satellite orbits and exoplanet transits. • Themed journeys connecting existing topics and routes. • An offline sky calendar with approximate Moon phases and meteor shower seasons. • Small and medium Home Screen widgets with the question of the day. FIND YOUR OWN PACE Start in Today, then search cards, topics, routes and labs in Discover. Save discoveries, pick up where you left off and follow your progress. In Profile, save a progress backup to a file, then preview and confirm before restoring it. Restoration replaces your current progress with the selected backup; it does not merge records. START FREE The main library includes 50 cards, 6 complete topics, 1 route and 2 labs for free. The two new mission experiments are also free. An optional one-time Premium purchase unlocks 450 more cards, 34 more topics, 9 more routes and 3 more labs, completing the full main library of 500 cards, 40 topics, 10 routes and 5 labs. No subscription or ads. Purchases and Restore Purchases are handled through Apple. MAKE IT YOURS Choose English, Turkish, Spanish or French. Use light mode, dark mode or your device's appearance setting. Enable an optional daily discovery reminder; notification permission is requested when you turn it on. No app account is required. Progress stays on your device and does not automatically sync between devices. Progress backups do not transfer purchase access or language/reminder settings. Core content and experiments work offline. Purchases, Restore Purchases and external source links require internet. Moon phases are approximate educational calculations (±1 day); the calendar does not predict local visibility or eclipses. Meteor dates are a seasonal guide. Cover artwork is illustrative, and experiments are educational models with stated assumptions.