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Space Fact #146

Mark Twain arrived with Halley's Comet in 1835 and left with it in 1910

Mark Twain was born in 1835 while Halley's Comet was in the sky, predicted he would go out with the comet, and died in April 1910 just as it returned.

October 10, 2026 · 1 min read · 3 sources

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Some people have a great sense of timing. Mark Twain, the author of “Tom Sawyer” and “Huckleberry Finn,” had a comet for it.

Born under a comet

According to NASA, Halley’s Comet swings close to the Sun about every 76 years on average. The exact time varies because the planets’ gravity tugs on it. NASA says the shortest measured lap lasted 74.42 years, and it happens to be the one from 1835 to 1910.

1835 was the year Mark Twain was born. According to the University of Houston’s program “The Engines of Our Ingenuity,” the comet was in the sky when he was born.

A prediction on the record

Twain knew this and turned it into a punchline. According to Smithsonian Libraries, he wrote in 1909: “I came in with Halley’s Comet in 1835. It is coming again next year, and I expect to go out with it.” A bit of gallows humor, classic Twain.

Then exactly that happened. In April 1910 the comet returned, and according to “The Engines of Our Ingenuity,” Mark Twain died on April 21, 1910, just as the comet made its next pass within sight of Earth. The sources differ slightly on the day: Smithsonian Libraries gives April 20.

To be clear: Twain didn’t summon his own death. He was 74 years old by then. But a writer spending his life exactly between two visits of the same comet, and announcing it in advance, is a story he could hardly have written better himself.

Bonus fact: According to NASA, Halley’s Comet comes back in 2061. Its dust trail already gives us two meteor showers every year, the Eta Aquarids in May and the Orionids in October.

Some people go out with a bang. Twain went out with a tail.

The evidence

  1. 1The Engines of Our Ingenuity: Halley's Comet
  2. 2Smithsonian Libraries: Mark Twain's birthday
  3. 3NASA Science: 1P/Halley

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🎃 The golden pumpkin! Here is your secret Halloween fact:

The first jack-o’-lanterns were turnips. In Ireland and other Celtic regions in the 19th and early 20th centuries, people carved faces into turnips, sometimes potatoes or beets, and put a candle inside. It was meant to keep away the restless spirit “Stingy Jack”, who was barred from both heaven and hell. The National Museum of Ireland in County Mayo still keeps a plaster cast of a carved turnip from Donegal with “a pinched angry face”.

Source: Smithsonian Magazine