Gary L Kronk

Cometography is a multi-volume catalog of every comet observed from ancient times up to the 1990s, when the internet took off as a medium of scientific record. It uses the most reliable orbits known to determine the distances from the Earth and Sun at the time of discovery and last observation, as w...

Cometography is a multi-volume catalog of every comet observed throughout history. It uses the most reliable orbits known to determine the distances from the Earth and Sun at the time a comet was discovered and last observed, as well as the largest and smallest angular distance to the Sun, most nort...

Cometography is the most complete and comprehensive collection of data on comets available. It comes in four self-contained sequential volumes and this, the first, covers ancient times through to the end of the eighteenth century. Cometography uses the most reliable orbits known to determine all th...

“I am simply in awe of this book. An absolutely astonishing triumph.”Eric Metaxas, New York Times best-selling author, Bonhoeffer The Star of Bethlehem is one of the greatest mysteries in astronomy and in the Bible. What was it? How did it prompt the Magi to set out on a long journey to Judea? How d...

This book provides detailed research on over 100 annual and periodic meteor streams. It includes details of their discovery, important observations and orbits, and gives a full picture of the duration and location of each meteor shower.