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[These books provide] a discursive and authoritative view of the latest ideas and information on the history, structure and evolution of Halley's Comet, as observed by international organizations in a lively and informative manner, highlighting areas of agreement, theoretical speculation and controversy.
In Part Based on Reviews Presented at the 121st Colloquium of the International Astronomical Union, held in Bamberg, Germany, April 24-28, 1989
Continues the annual series presenting review articles designed to keep specialists abreast of advances in other disciplines working on human genetics. The five reviews cover genital adrenal hyperplasia, amyloidosis, Huntington's disease, cystic fibrosis, and von Recklinghausen neurofibromatosis. An
Follows the comet through one full 7.6 billion mile circuit, explores history leading to present understanding of comets, emphasizes the work of Edmond Halley, and discusses the current theories of comet origin.
For most people, Edmond Halley is best known for accurately predicting the periodic appearance of the comet that ultimately would bear his name. But his greatest achievement may have been overlookedâ€" indeed few people know that it was Halley who solved the riddle of accurate navigation for all sea-going vessels. As seventeenth-century scientists gradually came to believe that the inside of the Earth was magnetized they were puzzled by the fact magnetic north not only varied slightly from place to place, but gradually changed over time, suggesting a slow variation of the Earth's magnetic field. But if the Earth was permanently magnetized, how could its magnetism vary? Edmond Halley, Brit...
This guide allows readers the opportunity to discover the story of farming including the rhythm of the seasons, the rearing of livestock and the work of ploughing, sowing and harvesting. On each spread a photograph of actual objects shows close-up detail.
Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documenta tion of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near ...