
Cosmic Calendar: 13.8 Billion Years in One Year, a Human Life in 0.2 Seconds
Space Daily revisits Carl Sagan’s Cosmic Calendar, compressing 13.8 billion years into one year—Big Bang on January 1, recorded history ends in the final 12–13 seconds, and a human life is about 0.2 seconds. Ongoing JWST observations and cosmological simulations (COLIBRE/FLAMINGO) are refining the timeline, but the 14-second window remains the core takeaway for perspective on humanity’s place in the cosmos.

