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 only lists information on modern-day comets and meteor showers. The book, however, thoroughly investigates how specific ancient impacts and near misses changed religious beliefs around the world.
The Discovery of Comet McNaught (C/2006 P1)
If someone were to say, "Comet McNaught", they could be referring to any of the over fifty comets discovered by Robert McNaught. However, the comet (C/2006 P1) seen in January of 2007 in the Southern hemisphere was one of the brightest comets in the 21st century.