SortStack #254 — 2027-02-18

By year · Order from earliest to most recent.

1. Alexander the Great founds the city of Alexandria in Egypt 331 BCE

   It became home to both the Great Library and the Pharos lighthouse, one of the Seven Wonders. Alexander never saw the finished city — he died eight years later.

2. The last Western Roman emperor is deposed, ending the empire in the west 476

   The final emperor, Romulus Augustulus, was a teenager. The Germanic general Odoacer didn't execute him — he pensioned him off to a villa.

3. Martin Luther publishes his Ninety-Five Theses, sparking the Reformation 1517

   Thanks to the new printing press, the theses spread across Germany in about two weeks — arguably history's first viral document.

4. Germany invades Poland, beginning the Second World War 1939

   Britain and France declared war two days later — then months of eerie quiet followed on the Western Front, a period nicknamed the 'Phoney War.'

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. The Philae probe makes the first-ever landing on a comet 2014

   Philae's harpoons failed and it bounced twice — the first bounce lasted nearly two hours in the comet's feeble gravity before it settled in a shadowy crevice.

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