Carl Sagan's Cosmic Calendar

Carl Sagan’s Cosmic Calendar lets you explore the history of the universe as if it all happened within a single year. From the birth of the universe to the formation of Earth, from the first life to modern humanity, every event is placed on a cosmic scale so you can see just how recent our story really is. Designed to be beautiful, calm, and easy to understand, the app turns science into something you can feel. Features: • Explore major cosmic events in a simple visual timeline • See the universe compressed into one calendar year • Move through events with a tactile wheel-based interface • Zoom from broad cosmic eras into dense periods of history • Learn through short, clear event descriptions Whether you’re curious about astronomy, love big ideas, or just want perspective, Cosmic Calendar gives you a new way to look at time.