Random A Long, Strange History of Halley Comet (13 items)

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  (#1) People Thought The Comet Would Fill Our Atmosphere With Deadly Cyanogen In 1910

  It's understandable for people to be afraid of something they don't understand, but in 1910, people were really, really freaked out about Halley's Comet. For the most part, scientists and civilians were fine with the idea of the comet. They hosted "comet parties," and treated the celestial body as a passing dignitary.

  When scientists discovered the tail of the comet contained cyanogen, however, French astronomer Camille Flammarion jumped to conclusions and stated the gas “would impregnate the atmosphere and possibly snuff out all life on the planet.” Smooth move, Flammarion.

  Obviously, people freaked out. They thought armageddon was here. Everyone started buying gas masks, and a few entrepreneurial folks began selling "Anti-Comet Pills." Scientists tried to explain how Flammarion's theory was impossible, but no one listened. In the end, gas failed to impregnate the atmosphere, and the comet continued on its path. 
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  (#2) An Amateur Astronomer Believed The Comet Would Set Earth On Fire

  1910 was a frightening year for amateur astronomers. With the coming of Halley's Comet, people began to fear for the worst and a bunch of wild theories cropped up about what could happen when the comet came around. One amateur astronomer, Sze zuk Chang Chin-liang, wrote a letter to the Engineer-in-Chief of the General Post Office in Greenwich to tell him the Earth was probably going to be burned to a crisp when the comet passed through the solar system again.

  He believed the comet was transparent, convex, and had two distinct poles. He thought once the comet got between the Earth and the Sun, it would magnify the Sun's rays and cook the inhabitants of the planet. His letter arrived from Shanghai two years after Halley's Comet passed the Earth, and we remained unburnt. 
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  (#3) Some People Believe Halley's Comet Was The Star Of Bethlehem

  The problem with being the most famous comet in the solar system is that everyone projects their personal beliefs onto you. It's been speculated that Halley's Comet was the "star" the three wise men followed in order to find Jesus, but it doesn't really fit the timeline. 

  It's likely Jesus was born during sometime between 6 and 4 BCE, which doesn't work with the comet's timeline, as it appeared in both 164 BCE and 87 BCE. This doesn't mean the wise men didn't see a comet - it just wasn't Halley's Comet. 
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  (#4) The Comet May Have Caused A Decade-Long Winter Starting In 536 CE

  According to some researchers, around the year 536 CE a decade-long winter began, and it had something to do with Halley's Comet. Scholars in Europe and Asia at the time reported 536 CE and the following years were absolutely freezing. Their writings describe what sounds like a large celestial body passing across the Sun. This caused a deep freeze, which completely destroyed crops and lead to years of famine. 

  Geologist Dallas Abbott believes that on its trip past the Sun, Halley's Comet broke up; the resulting pieces of debris that fell to Earth created a large dust cloud, effectively blocking out the sun. An analysis of Greenland ice in 2013 from 533 - 540 CE shows "large amounts of atmospheric dust during this seven-year period, not all of it originating from Earth," according to Abbott.

  Researchers also believe it could have been the reason humanity was more vulnerable to "Justinian's plague" from 541-542 CE. That being said, there's still quite a lot of research to do before we can place blame for this theoretical freeze on the comet. 
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  (#5) Genghis Khan Believed It Was His "Personal Star"

  Genghis Khan was the founder of the Mongol Empire, a vast army of disparate nomadic tribes, whose rule extended across modern-day China, Korea, the Caucasus, Central Asia, and substantial portions of Eastern Europe and Southwest Asia. When Halley's orbited in 1222 CE, Khan supposedly took inspiration from the comet and believed it was his "personal star." He decided to follow the comet west into southeastern Europe and continue the growth of his empire.
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  (#6) Mark Twain's Life Eerily Mirrored The Comet's Orbit

  Mark Twain was an anomaly. Not just because his writing was able to beautifully encapsulate every day life, or because he somehow always had a perfectly tailored white linen suit. He was also one of the few people whose life lined up nearly exactly with Halley's Comet. 

  He was born two weeks after the comet appeared in 1835, and he passed when it returned in 1910. Of his relation to the comet, he said: 

  "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."

  He died one day after the comet soared through the sky. 
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  (#7) Venus May Be Responsible For Halley's Chaotic Orbit

  For decades, scientists blamed Jupiter as one of the main culprits behind the lopsided orbit of Halley's Comet, but this gas giant with a mass of two-and-a-half times that of the other planets in the solar system isn't to blame. We should actually be pointing our fingers at Venus. 

  According to Tjarda Boekholt of Leiden University, he did "the most accurate calculations of Halley and the planets ever" and discovered Venus has the biggest effect on the comet out of everything in the solar system... although they're not sure why. Boekholt believes in about 3,000 years, the comet is going to fly close enough to Jupiter for the planet's gravitational pull to have a larger impact. From there on, no one can predict what's going to happen. 
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  (#8) The Orionid Meteor Shower Contains The Remains Of Halley's Comet

  Because of the length of time in between appearances by Halley's Comet, it's possible you'll never actually see it. Even if you were born in time for its flyby in the '80s, you may not remember it, and there's no guarantee you'll live to 2061 to see the next pass. But that's okay, because every year we get an Orionid shower from past iterations of the comet, and it provides a spectacular celestial sight. 

  NASA’s Bill Cooke says during this shower we see "stuff kicked off 150 years before 1985 which would be in the 1830s,” and that's just objectively cool. Some years, the shower can have as many as 70 or 80 meteors in an hour. Others only put off about 10 to 15 an hour. In 2018, the Orionid meteor shower peaks the nights of Oct. 21 - 22.

   

   

   

   

   
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  (#9) The Creation Of Halley's Comet Is Shrouded In Mystery

  According to Susan Wyckoff, a physicist who took part in research of the comet at Arizona State University in Tempe, Halley's Comet is completely unlike anything else in the solar system. It's not just that the comet has an unusual route, but it also has an odd ratio of carbon-12 and carbon-13 isotopes. 

  No one knows exactly why the comet has such a strange makeup, but one theory is that before the comet broke off from its original body (a nebular disc that surrounded the Sun within 10 million years of the its creation), it was "splattered" by a supernova. After breaking away from the disc, Halley's Comet began its lengthy trip through the solar system. 
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  (#10) Ancient Civilizations Believed The Comet Predicted Calamities

  Halley's Comet wasn't always a thing of wonder. Prior to humanity's scientific knowledge of celestial bodies, many people believed the comet was a sign of terrible things to come. People believed it predicted everything from war, famines, and even the end of days. 

  In 66 CE, first-century Romano-Jewish scholar Flavius Josephus believed the "star resembling a sword” meant the coming destruction of Jerusalem by the Romans. Hundreds of years later, Holy Roman Emperor Louis the Pious thought the comet was an omen signaling his eventual demise. Even though we now know Halley's has no affect on our day to day lives, there are still people who still believe the comet is a sign of the end times. 
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  (#11) Greek Scholars Describe A Tourist Attraction Created By Halley's Comet

  It doesn't matter in which era they were born, scientists love Halley's Comet. They want to know what's it about, what it's made of, and why it taunts us with its fiery whip of a tail. Ancient scholars from Greece, China, and Babylonian societies studied the comet and made some very impressive observations. 

  Greek scholars described a "wagonload" sized meteor that struck Northern Greece while Halley's Comet was visible in the sky. According to Jo Marchant, a science journalist and author, this turned the area of Greece hit by the meteor into a "tourist attraction," and likely put the fear of the comet into the Greeks. 

  People are now aware pieces of the comet burn up and come loose during its orbit, accounting for meteors that make their way to Earth. At one point it was believed that the comet had even split in two. 
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  (#12) The Comet Has Inspired A Lot Of Fiction

  What is it about Halley's Comet that brings out our ideas for worst case scenarios? People are obsessed about what could happen if a comet did... something, and while the films aren't scientifically accurate in the least, they are a lot of fun. 

  For instance, in Night of the Comet, everyone on Earth (except people who were in lead buildings, the safest places imaginable) are turned into zombies. In Coherence, a dinner party goes wrong after a comet creates multiple realities. And let's not forget Maximum Overdrive - you know, the movie about a comet bringing all of the Earth's electronics to life and forcing semi-trucks to chase down Emilio Estevez and company to the rockin' sounds of AC/DC. In the words of Bon Scott, if you want comet, you've got it. 
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  (#13) No One Knows What The Future Holds For Comet

  The more we grow used to the idea Halley's Comet is always going to be there, flying by every 76 years or so to say hello, the more apparent it is that nothing lasts forever. Even a "dirty snowball" like Halley's Comet has to fall apart at some point. While we know that the comet is going to disappear some day, we don't know when. 

  It's likely that in 3,000 years - once the comet comes under the influence of Jupiter's gravity - the already strange orbit of the comet is going to change even more. Scientists believe it could be around for any time between 10,000 and 10 million years, and while they don't have a specific end date for the comet in their calculations, they expect it to fully melt at some point. 

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