SortStack #1689 — 2031-01-23

By year · Order from earliest to most recent.

1. Construction begins on the great stone circle at Stonehenge 3000 BCE

   Its smaller bluestones were hauled roughly 240 km from the Preseli Hills in Wales — how Neolithic builders moved them is still debated.

2. Emperor Constantine dedicates Constantinople as the new Roman capital 330

   Built on the old Greek city of Byzantium, it remained an imperial capital for over a thousand years and is now Istanbul, Turkey's largest city.

3. Copernicus publishes his book putting the Sun at the center of the cosmos 1543

   Legend says a finished copy was placed in his hands on his deathbed. The Catholic Church didn't formally suspend the book until 73 years later.

4. Charles Darwin publishes On the Origin of Species 1859

   The entire first print run sold out to booksellers on the first day. Darwin had sat on the theory for some twenty years before a rival's letter forced his hand.

5. Reactor four explodes at the Chernobyl nuclear power plant 1986

   The Soviet Union stayed silent until radiation set off alarms at a Swedish plant over 1,000 km away — workers' shoes triggered the detectors.

6. Nelson Mandela walks free after twenty-seven years in prison 1990

   Four years after his release he was elected South Africa's president — and he later joked that he was 'a pensioner taking up a new job' at age 75.

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