April 9 brings together three very different kinds of turning point: a poet’s arrival, a war’s decisive surrender, and the introduction of a new generation of explorers. In 1821, French poet Charles Baudelaire was born; he would become known for *The Flowers of Evil* and for work as an essayist, art critic, and pioneering translator of Edgar Allan Poe. In 1865, at Appomattox Court House, Confederate General Robert E. Lee surrendered the Army of Northern Virginia to Union General Ulysses S. Grant, effectively ending the American Civil War. The date’s stories move from the imagination to the battlefield, then onward to the promise of spaceflight.
That last shift arrived in 1959, when NASA introduced the Mercury Seven, the first seven American astronauts, who would pilot the manned spaceflight program. Across more than a century, the list traces changing ideas of influence: the power of a poem, the consequences of military defeat, and the ambitions of a national program. April, a month of spring in the Northern Hemisphere, lends these milestones a fitting backdrop of transition. More broadly, the dates show how history often turns not only on dramatic endings, but also on beginnings that open unfamiliar paths.