He didn't discover it.
He did some calculations that suggested that a certain comet, seen during his lifetime, and three comets seen many years before, had the same orbit, and therefore were all probably the same comet.
He also predicted that this comet would return in a certain year in the future.
It did and it was named as Halley's comet, in his honour.
Edmund Halley realized that reports of comets through the ages showed a definite periodicity (about 76 years) and were probably the same comet, orbiting the Sun. This comet eventually received his name, although he never saw it.
Really, what he did was notice that there was a long history of observations of a notable comet spaced about 76 years apart, and conclude that maybe they might in fact be the same comet on a 76 year orbit. Which, it turns out, is the case.
Well, he didn't exactly discover it. He did some calculations about its orbit, and concluded that this particular comet (observed by other people) was the same that had been seen about 76 years earlier. He also said the comet would return, in about 76 years.
Edmond Halley. it was also named after him
It appeared every 76 years on the same date.
Halley's comet was predicted by Edmund Halley he took the comets of 1531-1607-1682, and using Newton law of gravitation (who was Halley good friend) and predicted when that comet would return in 1758 and sure enough on Christmas eve of 1758 it returned. oh and by the way he did not live to see it and also they called him a nut job that whole year Untill its return
It can be seen every 75-76 years. The next predicted perihelion of Halley's Comet will be 28 July 2061.
yes on november 8,2011
No, many thousands - probably MILLIONS - of people had observed what we now call "Halley's Comet" in the thousands of years before Edmund Halley realized that this was probably ONE comet coming back MANY times at regular intervals. Halley "predicted" that the comet would return to become visible again, and named the year - and he was right. In his honor, and long after his death, the comet was named for him.
The American humorist, author and Mississippi riverboat pilot Samuel Langhorn Clemens, who wrote under the pen name "Mark Twain", was born two weeks after Halley's Comet made its closest approach to the Earth in 1835. Clements wrote, near the end of his life, "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.' "
Halley's comet was predicted by Edmund Halley he took the comets of 1531-1607-1682, and using Newton law of gravitation (who was Halley good friend) and predicted when that comet would return in 1758 and sure enough on Christmas eve of 1758 it returned. oh and by the way he did not live to see it and also they called him a nut job that whole year Untill its return
Halley's Comet had been seen every 76 years since at least 240 BC, and probably earlier than that. But most people didn't live 76 years, and the written records weren't exactly common back then. So few people noticed that there was a comet coming by every 76 years. Edmund Halley DID make the connection, and analyzed the data of comet appearances in 1531, 1607 and 1682. In 1705, Halley said that these were all the SAME comet, and that the comet would return in 1758. It did (just barely!) and was named Halley's Comet in his honor.
It can be seen every 75-76 years. The next predicted perihelion of Halley's Comet will be 28 July 2061.
Why is a comet named after Halley? The comet was named after English astronomer Edmond Halley who first worked out how often this particular comet appeared in our skies. Mr Halley read reports of bright comets and said it was the same comet coming back near the Earth every 70 years or so. He predicted its next return. When it showed up on time, people called it Halley's Comet. See link below.<p></p><p> http://space.about.com/od/comets/a/halleyscomet.htm
yes on november 8,2011
Isaac Newton
No, many thousands - probably MILLIONS - of people had observed what we now call "Halley's Comet" in the thousands of years before Edmund Halley realized that this was probably ONE comet coming back MANY times at regular intervals. Halley "predicted" that the comet would return to become visible again, and named the year - and he was right. In his honor, and long after his death, the comet was named for him.
No comets are not visble on earth, every 76 years, only Halley's comet is only visible every 76 years
If you can see the tornado
At Mark Twain's birth in 1835, Halley's Comet was visible in the night sky. Interestingly, Twain passed away in 1910, the year Halley's Comet made its return, which he had predicted. This led to the popular saying, "I came in with Halley's Comet in 1835. It is coming again next year, and I expect to go out with it."
So that people can prepare for the coming blizzard.
If the wind becomes very strong and the tempteter drops