On February 11, 1778, some 300 people visit Voltaire following his return to Paris. Voltaire had been in exile for 28 years.

In southern France, Marie-Bernarde Soubirous, a 14-year-old French peasant girl, first claims to have seen the Virgin Mary, the mother of Jesus Christ and a central figure in the Roman Catholic religion. The apparitions, which totaled 18 before the end of the year, occurred in a grotto of a rock promontory near Lourdes, France. Marie explained that the Virgin Mary revealed herself as the Immaculate Conception, asked that a chapel be built on the site of the vision, and told the girl to drink from a fountain in the grotto, which Marie subsequently discovered by digging into the earth.

On February 11, 1945, a week of intensive bargaining by the leaders of the three major Allied powers ends in Yalta, a Soviet resort town on the Black Sea. It was the second conference of the “Big Three” Allied leaders—U.S. President Franklin D. Roosevelt, British Prime Minister Winston Churchill, and Soviet Premier Joseph Stalin—and the war had progressed mightily since their last meeting, which had taken place in Tehran in late 1943.

The Payola scandal reaches a new level of public prominence and legal gravity on February 11, 1960, when President Eisenhower called it an issue of public morality and the FCC proposed a new law making involvement in Payola a criminal act.

From the Kagoshima Space Center on the east coast of Japan’s Ohsumi Peninsula, Ohsumi, Japan’s first satellite, is successfully launched into an orbit around Earth. The achievement made Japan the world’s fourth space power, after the Soviet Union in 1957, the United States in 1958, and France in 1965.

Whitney Houston, one of the world’s top-selling singers from the mid-1980s to late 1990s, is found dead in the bathtub of her suite at the Beverly Hilton Hotel in Beverly Hills, California on February 11, 2012. Houston’s death was the result of accidental drowning; heart disease and cocaine, which was found in her system, were determined to be contributing factors.

A few months after the first known case was detected in Wuhan, China, and approximately three weeks after the first U.S. case was reported, on February 11, 2020, the World Health Organization officially named the illness that would go on to cause a pandemic "coronavirus disease 2019," shortened to the acronym COVID-19.