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| Author | : Jürgen Rahe |
| Publisher | : |
| Total Pages | : 152 |
| Release | : 1969 |
| Genre | : Comets |
| ISBN | : |
As far as possible pertinent facts about each photograph or drawing are given: observatory, observer, telescope, plate, and filter; mid-exposure time, duration of exposure, heliocentric distance, geocentric distance, phase angle (sun-comet-earth), enlargement factor, and scale of reproduction. Covers years 1835-1962.
| Author | : Jürgen Rahe |
| Publisher | : |
| Total Pages | : 144 |
| Release | : 1969 |
| Genre | : Comets |
| ISBN | : |
As far as possible pertinent facts about each photograph or drawing are given: observatory, observer, telescope, plate, and filter; mid-exposure time, duration of exposure, heliocentric distance, geocentric distance, phase angle (sun-comet-earth), enlargement factor, and scale of reproduction. Covers years 1835-1962.
| Author | : Jürgen Rahe |
| Publisher | : |
| Total Pages | : 148 |
| Release | : 1969 |
| Genre | : |
| ISBN | : |
| Author | : C. de Jager |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 383 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9401031053 |
The changing character of the IAU General Assemblies becomes most clear from a comparison of the agenda of the Brighton meeting with that of one of the earlier meetings. The fourth General Assembly (Cambridge Mass. , 1932) had about 240 participants, registered guests included, the Brighton meeting had about 2300 people attending. The Cambridge meeting lasted 5, working days, of which, however, three half days were exclusively devoted to excursions, leaving four real meeting days. At that time the nearly 30 commissions had each only one meeting, during part of a morning or afternoon; some commissions did not meet at all. There was one public lecture, by Sir Arthur Eddington, on 'The Expanding Universe'. Most of the small European countries were represented by two or three delegates only, but the delegations of France and Great Britain were composed of 20 and 18 scientists respectively; at that time there were only two delegates from Germany. After the Brighton General Assembly, with about 200 commission meetings - one commission met eleven times! - six Joint Discussions, four Invited Discourses, a Special Meeting and hardly time for excursions, there were a few complaints about too many overlapping meetings.
| Author | : Ronald Stoyan |
| Publisher | : Cambridge University Press |
| Total Pages | : 225 |
| Release | : 2015-01-08 |
| Genre | : Science |
| ISBN | : 1316195724 |
Throughout the ages, comets, enigmatic and beautiful wandering objects that appear for weeks or months, have alternately fascinated and terrified humankind. The result of five years of careful research, Atlas of Great Comets is a generously illustrated reference on thirty of the greatest comets that have been witnessed and documented since the Middle Ages. Special attention is given to the cultural and scientific impact of each appearance, supported by a wealth of images, from woodcuts, engravings, historical paintings and artifacts, to a showcase of the best astronomical photos and images. Following the introduction, giving the broad historical context and a modern scientific interpretation, the Great Comets feature in chronological order. For each, there is a contemporary description of its appearance along with its scientific, cultural and historical significance. Whether you are an armchair astronomer or a seasoned comet-chaser, this spectacular reference deserves a place on your shelf.
| Author | : John C. Brandt |
| Publisher | : Cambridge University Press |
| Total Pages | : 478 |
| Release | : 2004-03-11 |
| Genre | : Science |
| ISBN | : 9780521004664 |
Publisher Description
| Author | : |
| Publisher | : |
| Total Pages | : 646 |
| Release | : 1982 |
| Genre | : Aeronautics |
| ISBN | : |
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
| Author | : K. S. Krishna Swamy |
| Publisher | : World Scientific |
| Total Pages | : 460 |
| Release | : 2010 |
| Genre | : Science |
| ISBN | : 9814291110 |
This revised edition places a unique emphasis on all the new results from ground-based, satellites and space missions ? detection of molecule H2 and prompt emission lines of OH for the first time; discovery of X-rays in comets; observed diversity in chemical composition among comets; the puzzle of the constancy of spin temperature; the well-established mineralogy of cometary dust; extensive theoretical modeling carried out for understanding the observed effects; the similarity in the mineralogy of dust in circumstellar shell of stars, comets, meteorites, asteroids and IDPs, thus indicating the generic relationship between them.
| Author | : K S Krishna Swamy |
| Publisher | : World Scientific |
| Total Pages | : 396 |
| Release | : 1997-05-03 |
| Genre | : Science |
| ISBN | : 9814499064 |
The study of Comet Halley in 1986 was a tremendous success for cometary science. In March of that year, six spacecrafts passed through Comet Halley as close as 600 km from the nucleus and made the in situ measurements of various kinds. These space missions to Comet Halley and that of the ICE spacecraft to Comet Giacobini-Zinner combined with studies, both ground-based and above the atmosphere, have increased our knowledge of cometary science in a dramatic way.This new edition of Physics of Comets incorporates these new and exciting findings. The emphasis of the book is on the physical processes operating in a cometary environment. It discusses up-to-date observations, methods and results based on the study of various comets. The subject is developed in a systematic manner covering various aspects of cometary phenomena. This book may serve as a text book for students, and as reference material for researchers.
| Author | : Carl Sagan |
| Publisher | : Ballantine Books |
| Total Pages | : 432 |
| Release | : 2011-07-06 |
| Genre | : Science |
| ISBN | : 0307801055 |
What are these graceful visitors to our skies? We now know that they bring both life and death and teach us about our origins. Comet begins with a breathtaking journey through space astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and portents attached to them. The authors show how comets have spurred some of the great discoveries in the history of science and raise intriguing questions about these brilliant visitors from the interstellar dark. Were the fates of the dinosaurs and the origins of humans tied to the wanderings of a comet? Are comets the building blocks from which worlds are formed? Lavishly illustrated with photographs and specially commissioned full-color paintings, Comet is an enthralling adventure, indispensable for anyone who has ever gazed up at the heavens and wondered why. Praise for Comet "Simply the best." —The Times of London "Fascinating, evocative, inspiring." —The Washington Post "Comet humanizes science. A beautiful, interesting book." —United Press International "Masterful . . . science, poetry, and imagination." —The Atlanta Journal & Constitution
