DNR215
发表于 2025-3-25 06:53:33
Victorian Spectacles: Great Comets of the Nineteenth Century,the mathematics involved in pinning down cometary orbits was pretty well established. The instrumentation with which to study comets had never been more advanced, and the sheer number of observers—both amateur and professional—interested in the study of comets was at an all-time high. No fewer than
辩论
发表于 2025-3-25 10:05:22
Locating, Tracking, and Recording Comet Sightings,pparition clearly in flight but seemingly frozen in time, a phantom of the Solar System, the likes of which understandably in earlier times struck more ignorant generations of viewers with feelings of foreboding, awe and terror. Nowadays we still feel the awe. Regardless of our knowledge, humans (ev
Cosmopolitan
发表于 2025-3-25 11:54:27
Choosing the Right Equipment,2006 P1 (McNaught), whose tail grew to 40° in length, was able to be captured in all its glory in a single image. Of course, no optical instrument has a wide enough field of view to provide a complete visual view of any comet whose tail stretches more than a hand’s width across the sky (unless you l
Ebct207
发表于 2025-3-25 19:21:37
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LIMN
发表于 2025-3-25 20:11:42
Peter GregoDetailed guide to seeing and studying what may possibly be the greatest comet of modern times, due to approach Earth fall of 2013 Includes set of specially prepared maps (fully labeled) covering brigh
Fatten
发表于 2025-3-26 00:48:40
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foppish
发表于 2025-3-26 04:53:44
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就职
发表于 2025-3-26 11:02:43
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entrance
发表于 2025-3-26 15:37:41
https://doi.org/10.1007/978-3-663-05508-2s. Often these discoveries brighten and become respectable binocular or even naked-eye objects at their peak. Then there are the periodic comets, 290 of which are known; their orbits are within the Solar System and their behavior can be predicted with a good degree of accuracy for many perihelia to come.
散开
发表于 2025-3-26 20:37:45
Leitfaden für die ReisebüroausschreibungTwo waves of Great Comets were to sweep across twentieth-century skies. The four decades separating these waves saw tremendous advances in science and astronomy, and humanity finally got to see comets up-close through the eyes of space probes.