Carl Sagan's Cosmic Calendar

Explore 13.8 billion years of cosmic history compressed into one calendar year. Swipe through milestones from the Big Bang to modern humanity.

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Interactive Timeline

Navigate through key events with rich visuals and contextual descriptions.

Cosmic Birthday

See your birthday mapped onto the universe's 13.8 billion-year timeline.

Science-Inspired

Experience Carl Sagan's perspective on cosmic time with a modern interface.