Other Facts for Halley's Comet


You can now buy the recently released book, Fall of a Thousand Suns: How Near Misses and Comet Impacts affected the Religious Beliefs of our Ancestors. It is available through iBooks and Amazon.


This website simply lists information about Halley's Comet. The book, however, thoroughly investigates how ancient impacts and near misses changed religious beliefs around the world. The book is the result of years of research and countless interviews with astrophysicists, scientists and religious scholars. After reading it, you won't look at comets, meteor showers or religion in the same way.




Comet Halley    
For millennia the compositon of Halley's Comet was guesswork. In 1986, the U.S. Spacecraft Giotto flew through the tail of the comet and gathered the facts firsthand, helping scientists definitively determine its chemical composition.
Halley's Comet Speed    
The speed of Halley's Comet is obviously dependent on its orbital path. Several times however it has been measured. At its furthest point from the Sun it's estimated to be traveling 3,600 km / hour. When it passed the Earth in 1910, it was clocked at 158,000 miles (254,000 km) per hour.
Comet Halley    
How big is Halley's Comet? The dimensions of Halley's Comet's nucleus are 10 x 5 x 5 mile (16 x 8 x 8 kilometer). It is shaped like a peanut. Due to the speed and size of Halley's Comet, it would cause unimaginable disaster if it collided with Earth unleashing energy millions of times more powerful than the atomic bomb dropped on Nagasaki.


Meteor Showers casued by Halley's Comet    
Halley's Comet (1P / Halley) is unusual in that it is believed to be the parent body of not one, but two meteor showers every year. They are the Eta Aquarids and the Orionids occurring every year in April and October, respectively.