BigSpanBigSpan is a comprehensive timeline visualization tool designed to map events across the full spectrum of time — from individual days and years to millions and billions of years. You can navigate seamlessly through history, geology, and cosmic time, zooming from the finest details to the vast expanse of the universe's timeline.
Built for anyone curious about time — from researchers and educators to armchair historians and cosmic thinkers — BigSpan reveals how events relate across unprecedented scales. Whether exploring genealogical records, historical milestones, geological epochs, or the deep history of the cosmos, it helps you maintain perspective across infinite temporal depth.
BigSpan is a focused personal research project — not a commercial product or institutional initiative. It's developed and maintained by one individual, driven by a fascination with visualizing time at scale. The platform continues to evolve as an ongoing experiment in mapping time itself.
There are no fees and no commercial agenda. BigSpan exists purely as an exploration of what becomes possible when we can navigate time as freely as we navigate space.