Samuel Langhorne Clemens, world-famous author of The Adventures of Huckleberry Finn under the pen name Mark Twain, possessed a life story stranger than fiction. Twain was born on November 30, 1835, in Florida, Missouri. Just two weeks earlier, Halley's Comet had blazed across the night sky, making its perihelion passage past Earth—an astronomical event that occurs only once every 75 to 76 years.
Fast forward to 1909: Twain was 73 years old, dealing with declining health, and acutely aware that the famous comet was due for a grand return. In a conversation recorded by his biographer Albert Bigelow Paine, Twain famously reflected on his celestial companion: 'I came in with Halley's Comet in 1835. It is coming again next year, and I expect to go out with it.
It will be the greatest disappointment of my life if I don't go out with Halley's Comet. The Almighty has said, no doubt: Now here are these two unaccountable freaks; they came in together, they must go out together.' The universe, it turned out, was listening closely to the legendary humorist.
Halley's Comet achieved its brightest perihelion appearance on April 20, 1910. Less than 24 hours later, on April 21, 1910, Mark Twain suffered a fatal heart attack at his home in Redding, Connecticut. He died at age 74, completing a life bounded almost perfectly by the arrival and departure of the solar system's most celebrated comet.
While astronomers dismiss the timing as mere coincidence, Twain's perfect cosmic departure remains one of history's greatest non-fictional punchlines.