Popeye the Sailor Man makes his first appearance in a cartoon strip

The Shah of Iran leaves Iran with his family and relocates to Egypt.

Wikipedia goes online for the first time.

The Huygens probe lands on Saturn’s moon Titan.

The Treaty of Cahuenga puts an end to the Mexican–American War in California.

There is an uprising in Sicily against the Bourbon Kingdom of the Two Sicilies.

Insulin is first used to treat diabetes in a human patient.

The underground railway between the London Paddington station and Farringdon station opens.

Elizabeth Short, nicknamed the Black Dahlia, is last seen alive.

Attempted assassination of Arizona congresswoman Gabrielle Giffords